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circulatory/respiratory system test

Total questions: 170

Worksheet time: 2hrs 15mins

Name
Class
Date
1.
What structure is a passageway for both food and air?
a)
Pharynx
b)
Bronchus
c)
Trachea
d)
Larynx
2.
If your epiglottis were to suddenly stop working, what activity could be life threatening?
a)
Breathin
b)
Walking
c)
Coughing
d)
Eating
3.
Where in the respiratory tract does the exchange of oxygen and carbon dioxide take place?
a)
Larynx
b)
Bronchi
c)
Trachea
d)
Alveoli
4.

After cellular respiration, what happens to the carbon dioxide?

a)

It leaves the alveoli and is exhaled from the lungs

b)

It leaves the bloodstream and enters the alveoli

c)

It leaves the cells and enters the bloodstream

d)

It leaves the alveoli and enters the bloodstream

5.

Which of the following describes the path of carbon dioxide as it leaves your capillaries and exits through the respiratory system?

a)

bronchioles, bronchi, alveoli, trachea, larynx, pharynx, mouth/nose

b)

alveoli, bronchioles, bronchi, trachea, larynx, pharynx, mouth/nose

c)

mouth/nose, pharynx, larynx, trachea, bronchi, bronchioles, alveoli

d)

mouth/nose, pharynx, larynx, bronchioles, trachea, bronchi, alveoli

6.

The structure that contracts, allowing you to inhale is/are the

a)

lungs

b)

diaphragm

c)

trachea

d)

larnyx

7.

You are sitting calmly while you work on this test. The amount of air that is regularly being exchanges through your lungs during this time is called the

a)

residual volume.

b)

total lung capacity.

c)

tidal volume.

d)

vital capacity.

8.

Your friend had her larynx removed. What will she be unable to do?

a)

cough

b)

swallow

c)

breath

d)

speak

9.

When your diaphragm and intercostal muscles are relaxing, what are you doing?

a)

exhaling

b)

a strenuous activity

c)

resting

d)

inhaling

10.

tiny sacs of lung tissue specialized for the movement of gases between air and blood.

a)

lungs

b)

bronchi

c)

alveoli

d)

diaphragm

11.

What is the function of these tiny hairs in the bronchial tubes?

a)

moistens the air as it enters the lungs

b)

helps the lungs get carbon dioxide

c)

removes unwanted mater from the lungs

d)

helps the lungs get oxygen

12.

Which answer is describes Boyle's Law?

a)

Increase in volume= increase in pressure

b)

Increase in volume+ no effect on pressure

c)

decrease in volume= decrease in pressure

d)

Increase in volume= decrease in pressure

13.

How many lobes does the left lung have? Right lobe?

a)

R:3, L:4

b)

L:3, R:2

c)

R:3, L:2

d)

R:2, L:2

14.
leaflike piece of cartilage that closes the opening into the larynx during swallowing; prevents food and liquids from entering the respiratory tract
a)
bronchi
b)
bronchioles
c)
alveoli
d)
epiglottis
15.
tube extending from the larynx to center of the chest; carries air between the pharynx and bronchi; windpipe
a)
bronchi
b)
trachea
c)
alveoli
d)
bronchioles
16.
The trachea divides into two _______________ near the center of the chest that carries air into the lungs.
a)
bronchi
b)
bronchioles
c)
alveoli
d)
trachea
17.
smallest branches of the bronchi
a)
trachea
b)
bronchi
c)
bronchioles
d)
alveoli
18.
a dome shaped sheet of muscle, the _________, separates the chest from the abdomen
a)
diaphragm
b)
epiglottis
c)
alveoli
d)
bronchial tubes
19.

Diagram shows a model of human respiratory system. K represents....

a)

lung

b)

rib cage

c)

diaphragm

d)

thoracic cavity

20.

Which is the correct order of air passage in the breathing mechanism?

a)

Nostril, nasal cavity, pharynx, larynx, trachea, bronchus, bronchiole, alveolus

b)

Nostril, nasal cavity, larynx, pharynx, trachea, bronchus, bronchiole, alveolus

c)

Nostril, nasal cavity, pharynx, larynx, trachea, bronchiole, bronchus, alveolus

d)

Nostril, nasal cavity, trachea, larynx, pharynx, bronchus, bronchiole, alveolus

21.

"Movements of the rib cage and diaphragm make the thoracic cavity smaller and cause the air pressure in the thoracic cavity to increase"


The situation happens during....

a)

inhalation

b)

exhalation

c)

excretion

d)

blood circulation

22.

Red Blood Cells that carry oxygen are produced in:

a)

The lungs

b)

Bone marrow

c)

The heart

d)

The kidneys

23.

During breathing, gases between the lungs and capillaries are exchanged by

a)

Osmosis

b)

Active Transport

c)

Diffusion

d)

Brownian Motion

24.

Why do you need mucous membranes in the bronchioles?

a)

to help the food go down smoothly

b)

to stop the air irritating them

c)

to help air pass through

d)

to trap and remove foreign particles

25.

Which part of the pharynx is most superior?

a)

laryngopharynx

b)

nasopharynx

c)

oropharynx

d)

alveolarpharynx

26.
What is the function of the respiratory system
a)
Take in O2 only
b)
Remove CO2 only
c)
Take in O2 ad remove CO2
d)
Make sugar
27.

A chronic respiratory disorder where bronchial tubes contract quickly causing shortness of breath, coughing, and wheezing

a)

Bronchitis

b)

Emphysema

c)

Lung cancer

d)

Asthma

28.
Alveoli increase the surface area in the lungs to allow...
a)
More nutrients to be absorbed
b)
You to breathe faster
c)
You to breathe slower
d)
More O2 and CO2 to exchange
29.

Membrane layer which covers the outside of lungs.

a)

Pleura

b)

Alveolar Ducts

c)

Alveoli

d)

Bronchi

30.

The central control of breathing

a)

Epiglottis

b)

Medulla

c)

Cerebellum

d)

Frontal lobe

31.

A contraction of the diaphragm during inhalation causes it to flatten. What else does the contraction result in?

a)

An increase in the volume of the thoracic cavity

b)

Increase in alveolar pressure

c)

A decrease in lung volume

d)

A decrease in the volume of the thoracic cavity

32.

Inspiration is produced by a _____________ in the pressure in the thoracic cavity and in the air passages of the lungs.

a)

decrease

b)

increase

c)

consistency

33.

As volume increases the amount of molecules running into each other will _____

a)

increase

b)

decrease

c)

stay the same

34.

During expiration your diaphragm moves ....

a)

up

b)

down

c)

both

35.

The more collisions between molecules the ...

a)

lower the presssure

b)

greater the pressure

c)

the smaller the drop in pressure

d)

the larger the drop in pressure

36.

According to Boyle’s law, the pressure exerted by a gas ___________ as the volume of space it occupies __________ ,provided its temperature remains constant.

a)

decreases, decreases

b)

decreases, increases

c)

increases, increases

37.

What are the main muscles of inhalation?

a)

The diaphragm and intercostal muscles

b)

The scalenes and the abdominal muscles

c)

The diaphram and abdominal muscles

d)

The diaphragm and latissimus muscles

38.
What is the volume that remains in the lungs even after a forceful exhale
a)
expiratory reserve
b)
residual volume
c)
inspiratory reserve
d)
total lung capacity
39.
The volume of a normal breath 
a)
3000mL
b)
2400mL
c)
1200mL
d)
500mL
40.
The amount of air you can force out after a normal breath out
a)
Expiratory Reserve
b)
Functional Residual Capacity
c)
Vital Capacity
d)
Inspiratory Capacity
41.
The amount of air you can still inhale after a normal breath in
a)
Vital Capacity
b)
Inspiratory Reserve
c)
Functional Residual Capacity
d)
Inspiratory Capacity
42.
The maximum air you can get in and out of your lungs
a)
Vital Capacity
b)
Total Lung Capacity
c)
Residual Volume
d)
Inspiratory Reserve Volume
43.

What pressure gradient is exhalation triggered by?

a)

The pressure in the lungs is less than the pressure of the atmosphere

b)

The pressure in the lungs is greater than the pressure of the atmosphere

c)

The pressure in the lungs is equal to the pressure of the atmosphere

44.

Which letter corresponds to the volume of air breathed in or out of the lungs per breath

a)

A

b)

B

c)

C

d)

D

45.

Which letter corresponds to the maximum volume of air that can be forcibly expired after a maximal intake of air

a)

H

b)

F

c)

G

d)

A

46.

Which letter corresponds to the volume of air remaining in the lungs at the end of a maximal expiration

a)

C

b)

D

c)

F

d)

H

47.

What type of tissue lines the nasal cavity and the superior pharynx?

a)

Simple squamous epithelium

b)

Pseudostratified epithelium

c)

Stratified squamous epithelium

d)

Simple cuboidal epithelium

48.

What type of tissue lines the inferior pharynx?

a)

Simple squamous epithelium

b)

Pseudostratified epithelium

c)

Stratified squamous epithelium

d)

Simple cuboidal epithelium

49.

What type of tissue lines the trachea and bronchi?

a)

Simple squamous epithelium

b)

Pseudostratified epithelium

c)

Stratified squamous epithelium

d)

Simple cuboidal epithelium

50.

What type of tissue lines the alveoli?

a)

Simple squamous epithelium

b)

Pseudostratified epithelium

c)

Stratified squamous epithelium

d)

Simple cuboidal epithelium

51.

Steps to inhalation then exhalation NOT in the correct order.

1. Diaphragm relaxes

2. Diaphragm contracts

3. Volume in chest cavity increases

4. Volume in chest cavity decreases

5. Pressure is greater in the chest than in the air outside

6. Pressure is lower in the chest than in the air outside

7. Air rushes in

8. Air ruses out.

Which step would happen first starting with inhalation: (a)   example answer 8. 0r 8 (only one # for answer!!!)

52.

Steps to inhalation then exhalation NOT in the correct order.

1. Diaphragm relaxes

2. Diaphragm contracts

3. Volume in chest cavity increases

4. Volume in chest cavity decreases

5. Pressure is greater in the chest than in the air outside

6. Pressure is lower in the chest than in the air outside

7. Air rushes in

8. Air ruses out.

Which step would happen 2nd starting with inhalation: (a)   example answer 8. 0r 8 (only one # for answer!!!)

53.

Steps to inhalation then exhalation NOT in the correct order.

1. Diaphragm relaxes

2. Diaphragm contracts

3. Volume in chest cavity increases

4. Volume in chest cavity decreases

5. Pressure is greater in the chest than in the air outside

6. Pressure is lower in the chest than in the air outside

7. Air rushes in

8. Air ruses out.

Which step would happen 3rd starting with inhalation: (a)   example answer 8. 0r 8 (only one # for answer!!!)

54.

Steps to inhalation then exhalation NOT in the correct order.

1. Diaphragm relaxes

2. Diaphragm contracts

3. Volume in chest cavity increases

4. Volume in chest cavity decreases

5. Pressure is greater in the chest than in the air outside

6. Pressure is lower in the chest than in the air outside

7. Air rushes in

8. Air ruses out.

Which step would happen 4th starting with inhalation: (a)   example answer 8. 0r 8 (only one # for answer!!!)

55.

Steps to inhalation then exhalation NOT in the correct order.

1. Diaphragm relaxes

2. Diaphragm contracts

3. Volume in chest cavity increases

4. Volume in chest cavity decreases

5. Pressure is greater in the chest than in the air outside

6. Pressure is lower in the chest than in the air outside

7. Air rushes in

8. Air ruses out.

Which step would happen 5th starting with inhalation: (a)   example answer 8. 0r 8 (only one # for answer!!!)

56.

Steps to inhalation then exhalation NOT in the correct order.

1. Diaphragm relaxes

2. Diaphragm contracts

3. Volume in chest cavity increases

4. Volume in chest cavity decreases

5. Pressure is greater in the chest than in the air outside

6. Pressure is lower in the chest than in the air outside

7. Air rushes in

8. Air ruses out.

Which step would happen 6th starting with inhalation: (a)   example answer 8. 0r 8 (only one # for answer!!!)

57.

Steps to inhalation then exhalation NOT in the correct order.

1. Diaphragm relaxes

2. Diaphragm contracts

3. Volume in chest cavity increases

4. Volume in chest cavity decreases

5. Pressure is greater in the chest than in the air outside

6. Pressure is lower in the chest than in the air outside

7. Air rushes in

8. Air ruses out.

Which step would happen 7th starting with inhalation: (a)   example answer 8. 0r 8 (only one # for answer!!!)

58.

Steps to inhalation then exhalation NOT in the correct order.

1. Diaphragm relaxes

2. Diaphragm contracts

3. Volume in chest cavity increases

4. Volume in chest cavity decreases

5. Pressure is greater in the chest than in the air outside

6. Pressure is lower in the chest than in the air outside

7. Air rushes in

8. Air ruses out.

Which step would happen last starting with inhalation: (a)   example answer 8. 0r 8 (only one # for answer!!!)

59.

What makes up around 55% of the blood?

a)

Plasma

b)

Red Blood Cells

c)

White Blood Cells

d)

Platelets

60.

What carries oxygen around the body?

a)

Plasma

b)

Red Blood Cells

c)

Platelets

d)

White Blood Cells

61.

What causes the blood to be the distinct red color?

a)

Hemoglobin

b)

Glucose

c)

Hormones

d)

Oxygen

62.

What is the function (job) of the platelets?

a)

To form clots (i.e. scabs) when you have cuts and grazes.

b)

To transport oxygen to the muscles

c)

To carry dissolved sugars.

d)

To produce antibodies

63.

What is the function (job) of the white blood cells?

a)

To transport oxygen around the body.

b)

To carry dissolved sugars.

c)

To clot and cover wounds like cuts and grazes.

d)

To destroy pathogens.

64.

Which blood vessels take blood TO the heart?

a)

Veins

b)

Arteries

c)

Capillaries

65.

Which blood vessels take blood AWAY from the heart?

a)

Veins

b)

Arteries

c)

Capillaries

66.

Which is the smallest of the 3 blood vessels?

a)

Veins

b)

Arteries

c)

Capillaries

67.

What is blood made of?

a)

oxygen and plasma

b)

red blood cells and white blood cells

c)

plasma, red blood cells, white blood cells, and platelets.

d)

plasma and platelets

68.

Which cell engulfs and digests bacteria/pathogens? Most common leukocyte.

a)

lymphocytes

b)

neutrophil

c)

platelets

d)

eosinophil

69.

Which white blood cells make antibodies and killer cells?

a)

phagocytes

b)

lymphocytes

c)

platelets

70.

A system of the body which pumps blood too and from the lungs to become oxygenated.

a)

Systemic

b)

Pulmonary

c)

Parasympathetic

d)

Sympathetic

71.

A system of the body which pumps blood from the left ventricle of the heart to the Aorta and the rest of the body.

a)

Systemic

b)

Pulmonary

c)

Parasympathetic

d)

Sympathetic

72.

What is Hemoglobin?

a)

Iron rich protein that transports oxygen in the blood cells.

b)

Blood Cells

c)

Blood Vessels

d)

A type of Capillary

73.

I have a large lumen, I have thin muscular walls, and low pressure

a)

Artery

b)

Vein

c)

Capillary

d)

Arteriole

74.

I have muscular walls, and a small lumen. Blood under higher pressure

a)

Artery

b)

Vein

c)

Capillary

d)

Arteriole

75.

Which of the following shows a correct route for the exchange of substances in blood leaving the heart?

a)

arteriole --> artery --> capillary --> vein --> venule

b)

artery --> vein --> capillary --> venule --> arteriole

c)

venule --> vein --> capillary --> artery --> arteriole

d)

artery --> arteriole --> capillary --> venule --> vein

76.

____ bridged between the arteries and vein

a)

Lungs

b)

Heart

c)

Spine

d)

Capillaries

77.

What is the part of the blood vessel through which blood flows called?

a)

Artery

b)

Lumen

c)

Gap

d)

Tube

78.

Oxygen and carbon dioxide are transported between the blood and alveoli by way of

a)

exocytosis and endocytosis by endothelial cells

b)

diffusion from areas of higher concentration to lower concentration

c)

pinocytosis using fluid-filled vesicles

d)

active transport (using ATP) by protein carriers of endothelial cells

79.

What is the name of the process where white blood cells surround, engulf and digest pathogens?

a)

protein synthesis

b)

exocytosis

c)

passive transport

d)

phagocytosis

80.

What process is being shown shown in the diagram?

a)

production of antibodies

b)

exocytosis

c)

phagocytosis

d)

Passive transport

81.

Which of the following is not a plasma protein?

a)

albumin

b)

globulin

c)

fibrogen

d)

hemoglobin

82.

Which of the following white blood cells are able to leave the bloodstream and enter surrounding tissues becoming macrophages?

a)

neutrophil

b)

monocytes

c)

electrocytes

d)

lymphocytes

83.

What type of tissue is blood?

a)

Epithelial

b)

Connective

c)

Muscle

d)

Nerve

84.

Plasma is made of ____% water.

a)

45%

b)

55%

c)

90%

d)

110%

85.

Which of the following is not a whole cell?

a)

monocytes

b)

thrombocytes

c)

leukocytes

d)

lymphocytes

86.

name of the valve that separates right atrium from right ventricle.

a)

tricuspid

b)

aortic semilunar

c)

mitral

d)

bicuspid

87.

Valve that blood is forced through from right ventricle into pulmonary arteries.

a)

pulmonary semi lunar valve

b)

aortic semi lunar valve

c)

mitral valve

d)

tricuspid valve

88.

In the walls of the heart, there are two thin layers around a thick layer of muscle called the

a)

epithelial tissue.

b)

pericardium.

c)

connective tissue.

d)

myocardium.

89.

................................... of the heart has the thick muscular wall because it pumps the blood to the systemic circuit

a)

left ventricle

b)

Right ventricle

c)

right atrium

d)

left atrium

90.
Contraction of the heart is done by the 
a)
epipericardium
b)
visceral pericardium
c)
pericardium
d)
myocardium
91.
The purpose of heart valves is to 
a)
set the pace at which the heart beats
b)
prevent blood from flowing backward
c)
oxygenate the blood as it passes through the valve
d)
add minerals to the blood
92.
The pointed, inferior portion of the heart, known as the ________ rests on the diaphragm and is oriented towards the left hip.
a)
base
b)
mediastinum
c)
apex
d)
pericardium
93.
The valves between the atria and ventricles are known as the ________ valves.
a)
atrioventricular
b)
aortic
c)
semilunar
d)
pulmonary
94.
When the ventricles contract, the bicuspid (mitral) valve prevents blood from flowing from the ________.
a)
right ventricle to right atrium
b)
left ventricle to left atrium
c)
left atrium to the right atrium
d)
right atrium to the left atrium
95.
The _________ PUMPS blood to the lungs.
a)
Right Atrium
b)
Right Ventricle
c)
Left Atrium
d)
Left Ventricle
96.

Which layer covers the heart and major vessels that contains a lubricating fluid that reduces friction as the heart beats?

a)

Pericardium

b)

Endocardium

c)

Myocardium

97.
The large veins that bring the blood back to the heart from the body is the?
a)
Vena Cava
b)
Aorta
c)
Coronary artery
d)
Capillary
98.

Deoxygenated blood enters the right atrium from the upper part of the body through the.

a)

inferior vena cava

b)

superior vena cava

c)

aorta

d)

pulmonary vein

99.

Where would you find the semilunar valves?

a)

between the atria and ventricles to prevent backflow of blood from ventricles to atria.

b)

at the base of the arteries to prevent blood returning to the ventricle

c)

between left atrium and left ventricle

d)

between right atrium and right ventricle

100.
Freshly oxygenated blood is delivered to the _____________ and then it passes into the  __________ to be pumped to the entire body.
a)
right ventricle; right atrium
b)
left ventricle; left atrium
c)
left atrium; left ventricle
d)
right atrium; right ventricle
101.
As the right ventricle contracts, the blood flows into the 
a)
Heart
b)
Pulmonary arteries 
c)
Atrium
d)
Ventricle 
102.

Which number is the superior vena cava?

a)

1

b)

2

c)

4

d)

8

103.
Which number is the pulmonary artery?
a)
4
b)
5
c)
6
d)
8
104.

Where is the blood in 1 and 4 coming from?

a)

All over the body

b)

The upper half of the body, head and arms

c)

The lower half of the body, legs and abdomen

d)

The lungs

105.
The two chambers of the heart which receive blood are known as the _________
a)
atria
b)
ventricles
c)
systemics
d)
pulmonic
106.
What does letter D represent?
a)
aorta
b)
left atrium
c)
left ventricle
d)
right atrium
107.
Which valve is letter X?
a)
aortic
b)
bicuspid
c)
tricuspid
d)
pulmonary
108.
What carries the oxygenated blood from the lungs to the left atrium of the heart?
a)
vena cava 
b)
aorta
c)
pulmonary vein
d)
pulmonary artery
109.
Identify
a)
Pulmonary veins
b)
Pulmonary artery
c)
Aorta
d)
Vena cava
110.

Vein that empties blood from the lower body into the upper right heart chamber

a)

Inferior Vena Cava

b)

Superior Vena Cava

c)

Pulmonary Veins

d)

Aortic veins

111.

Veins that empty blood from the lungs into the upper left heart chamber

a)

Inferior Vena Cava

b)

Superior Vena Cava

c)

Pulmonary Veins

d)

Aortic veins

112.

Which number is the pulmonary vein?

a)

4

b)

5

c)

6

d)

8

113.

Which number is the left ventricle?

a)

3

b)

9

c)

2

d)

8

114.

Which number is the right ventricle?

a)

3

b)

9

c)

2

d)

8

115.

Which number is the right atrium?

a)

3

b)

9

c)

2

d)

8

116.

The right and left chambers are separated by

a)

Sternum

b)

Septum

c)

Sernom

d)

Strenoum

117.
A general term that describes the force blood exerts against the walls of vessels is called _____________.
a)
ventricular pressure
b)
blood pressure
c)
atriaoventricular pressure
d)
pulse pressure
118.
When reading blood pressure, the higher number represents _______ blood pressure.
a)
systolic
b)
diastolic
c)
mitral
d)
tricuspid
119.
The lower number in a blood pressure reading represents _______ blood pressure
a)
systolic
b)
diastolic
c)
aortic
d)
capillary
120.

From the lungs blood enters the heart through this blood vessel.

a)

Pulmonary artery

b)

Pulmonary vein

c)

Aorta

d)

Vena cava

121.

From the pulmonary vein blood enters this chamber of the heart.

a)

Left atrium

b)

Right atrium

c)

Left ventricle

d)

Right ventricle

122.

From the left atrium blood travels through this valve

a)

tricuspid valve

b)

mitral valve (bicuspid)

c)

aortic valve

d)

pulmonary valve

123.
Blood travels through the mitral valve to this chamber of the heart.
a)
Left atrium
b)
Right atrium
c)
Left ventricle
d)
Right ventricle
124.
From the left ventricle blood is pushed through this valve.
a)
aortic valve
b)
pulmonary valve
c)
tricuspid valve
d)
mitral valve
125.
After being pushed through the the aortic valve blood moves through this blood vessel to the body
a)
pulmonary vein
b)
pulmonary artery
c)
aorta
d)
superior vena cava
126.
From the aorta blood is carried to
a)
The lungs
b)
The whole body
127.
From the body blood enters this blood vessel.
a)
Superior and Inferior Vena Cava
b)
Pulmonary Artery 
c)
Pulmonary Vein
d)
Aorta
128.
From the vena cava blood enters this chamber of the the heart.
a)
Left atrium
b)
Right atrium
c)
Left ventricle
d)
Right ventricle
129.
From the right atrium blood blood travels through this valve.
a)
Mitral valve
b)
Tricuspid valve
c)
Aortic Valve
d)
Pulmonary valve
130.
Blood travels through the tricuspid valve into this chamber of the heart.
a)
Left atrium
b)
Right atrium
c)
Left ventricle
d)
Right ventricle
131.
From the right ventricle blood is pushed through this valve
a)
Pulmonary valve
b)
Mitral valve
c)
Aortic valve 
d)
Tricuspid valve
132.
After being pushed through the pulmonary valve blood blood moves through this blood vessel to the lungs
a)
Pulmonary artery
b)
Pulmonary vein
c)
Aorta
d)
Superior and Inferior Vena Cava
133.
From the pulmonary artery blood is carried 
a)
To the lungs
b)
To the body
134.

The larynx is inferior to the tracheae

a)

true

b)

false

135.

The main bronchi are medial to the secondary bronchi

a)

true

b)

false

136.

Identify structure A

a)

Nasal cavity

b)

Larynx

c)

Bronchiole

d)

Trachea

e)

Bronchi

137.

Identify structure B

a)

Nasal cavity

b)

Larynx

c)

Bronchiole

d)

Trachea

e)

Bronchi

138.

Identify structure C

a)

Alveoli

b)

Larynx

c)

Bronchiole

d)

Trachea

e)

Bronchi

139.

Identify structure E

a)

Nasal cavity

b)

Larynx

c)

Pharynx

d)

Trachea

e)

Bronchi

140.

Identify structure F

a)

Nasal cavity

b)

Larynx

c)

Pharynx

d)

Trachea

e)

Bronchi

141.

Identify structure G

a)

Nasal cavity

b)

Larynx

c)

Pharynx

d)

Trachea

e)

Bronchi

142.

Identify structure A

a)

Alveoli

b)

Larynx

c)

Vocal folds

d)

Trachea

e)

Epiglottis

143.

When you breathe, your lungs take in ___ and remove ___.

a)

air/oxygen

b)

oxygen/carbon dioxide

c)

carbon dioxide/waste

d)

waste/air

144.

The air sacs that are covered with capillaries where gas exchange takes place

a)

bronchi

b)

lungs

c)

oxygen

d)

alveoli

145.

What adaptations does the alveoli have for efficient gas exchange?

a)

thick walls

b)

thin walls

c)

small surface area

146.

what is found around alveoli?

a)

capillaries

b)

pleura

c)

lymphatic nodes

d)

saliva

147.

Gas exchange is needed to supply _____________ to cells and remove __________________

a)

carbon dioxide; oxygen

b)

oxygen; food

c)

oxygen; carbon dioxide

d)

carbon dioxide; water

148.

Supply the tissues of the heart walls with Oxygen.

a)

Phrenic arteries

b)

Thoracic aorta

c)

Aortic arch

d)

Coronary arteries

149.

How many bones are in an adult human body?

a)

365

b)

206

c)

270

d)

302

150.

Cardiac muscles

a)
b)
c)
151.

Natural pacemaker

a)

Purkinje fibers

b)

Sinoatrial node

c)

Atrioventricular node

d)

Bundle of His

152.

Which part of the heart exerts the highest pressure during heart beat?

a)

Right atrium

b)

Right ventricle

c)

Left atrium

d)

Left ventricle

153.
a)

SA node →\rightarrow Purkinje fibers →\rightarrow AV node →\rightarrow Bundle of His

b)

Bundle of His \rightarrow Purkinje fibers \rightarrow AV node \rightarrow SA node

c)

SA node \rightarrow AV node \rightarrow Bundle of His \rightarrow Purkinje fibers

154.

"lub" "dub"

a)

lub - AV valves closed

b)

dub - AV valves closed

c)

lub - semilunar valves closed

d)

dub - semilunar valves closed

155.
a)

Electrolysis

b)

Electromagnet

c)

Electrocardiogram

156.

What is the function of valves present in the veins?

a)

Ensure blood flow back to the heart

b)

Prevent blood clotting

c)

Ensure blood flow in one direction

157.

The first 'lub' sound is produced when ________ close.

a)

tricuspid valve

b)

tricuspid vale and bicuspid valve

c)

semilunar valve

d)

bicuspid valve

158.

The contraction of the atria is controlled by the:

a)

SA node

b)

AV node

c)

Purkinje fibres

d)

Bundle of His

159.
What fibres allow the ventricles to contract?
a)
SA
b)
AV
c)
Purkinje
d)
Bundle of His
160.
The sinoatrial node is located in the ________.
a)
aorta
b)
right atrium
c)
left atrium
d)
right ventricle
161.
Which label is representing the Purkinje fibers?
a)
A
b)
C
c)
D
d)
E
162.

What area of the heart is responsible for the delay of conduction between the atrium and ventricles?

a)

Right bundle branch

b)

AV node

c)

Bundle of his

d)

Bachmann bundle

163.

Which label is representing the SA node?

a)

A

b)

C

c)

D

d)

E

164.

Planet Pneumo-Lumo (found way out beyond Pluto) has an atmospheric pressure of 1000mmHg. Oxygen makes up 25% its atmosphere. What is the Partial Pressure of Oxygen (PO2) on Pneumo?

a)

25mmHg

b)

250mmHg

c)

500mmHg

d)

750mmHg

165.

Which gas plays the more important role in determining respiratory rates?

a)

o2 levels

b)

co2 levels

c)

N2 levels

166.

Which of the following is the process by which oxygen and carbon dioxide diffuse between the bloodstream and the body tissues?

a)

External Respiration

b)

Internal Respiration

c)

Pulmonary Ventilation

d)

Cellular Respiration

167.

Why is it difficult to breathe at high altitude?

a)

The percentage of o2 is lower

b)

The percentage of co2 is higher

c)

The partial pressure of co2 is lower

d)

The partial pressure of o2 is lower

168.

In the diagram below, which part of the tracing represents the contraction of the atria?

a)

P

b)

T

c)

R

d)

S

169.

This wave indicates repolarisation of ventricles

a)

T waves

b)

U waves

c)

P waves

d)

Q waves

170.

This element of the EKG represents ventricular depolarization and contraction, and the blood moving to the lungs and body

a)

P Wave

b)

QRS Complex

c)

T Wave

d)

PR Interval

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