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Circulatory System

Total questions: 50

Worksheet time: 24mins

Name
Class
Date
1.

What is the main organ of the circulatory system?

a)

small intestine

b)

bone

c)

lungs

d)

heart

2.
How many types of blood vessels are in our body?
a)
1
b)
2
c)
3
d)
4
3.

Veins carry oxygen poor blood back to the heart.

a)

False

b)

True

4.

Arteries carry oxygen rich blood away from the heart.

a)

True

b)

False

5.

The job of the heart is to . . .

a)

pump blood around the body.

b)

send food to the small intestines.

c)

break down food.

d)

give energy to the body.

6.
______________ are the smallest blood vessels.
a)
Arteries
b)
Veins
c)
Capillaries
7.
______________ are the second largest blood vessel. 
a)
Arteries
b)
Veins
c)
Capillaries
8.
The circulatory system works with the ___________ system to provide our body with oxygen.
a)
respiratory
b)
digestive
c)
muscular
d)
skeletal
9.
The circulatory system works with the __________ system to obtain energy from nutrients that we eat. 
a)
respiratory 
b)
digestive
c)
skeletal
d)
nervous
10.
The heart has ___ chambers.
a)
1
b)
2
c)
3
d)
4
11.
What does Deoxygenated mean?
a)
Oxygen-rich
b)
Blood flow
c)
Oxygen-poor
d)
Water Flow
12.
Which is the correct definition of the Circulatory system?
a)
The system fights disease so the body stays healthy.
b)
The system that circulates blood and oxygen through the body, consisting of the heart,blood vessels,and blood.
c)
Breaks down food into smaller pieces and absorbs those nutrients into the body.
d)
Provides shape and structure for the body.
13.
What function does the heart do?
a)
Protects organs and produces red blood cells.
b)
Generates heat.
c)
Breaks down food into nutrients.
d)
The heart is a pump, which moves the blood. The arteries and veins are the pipes where the blood flows.
14.
arteries, veins, and capillaries are three types of __________
a)
heart valves
b)
blood vessels
c)
cells
d)
veins
15.
What is the Circulatory System also known as?
a)
The heart
b)
Cardiovascular System
c)
Nervous System
d)
Aorta
16.
What do Red-Blood cells do?
a)
Carry oxygen from the lungs to the body cells and  transport carbon dioxide from the cells back to the lungs
b)
keeps blood flowing in one direction to the heart and prevent blood from flowing backwards
c)
Collects  blood from the capillaries and drain it into the veins
d)
Bring nutriients to the cells and carries away waste materials.
17.
What does blood do?
a)
Carries Water to cells
b)
Carries Oxygen to cells
c)
Carries Food to cells
d)
All of the above 
18.
What is the heart ? 
a)
meaty organ 
b)
a small metal spike with a broadened flat head,
c)
organ of soft nervous tissue 
d)
muscular organ
19.
What does the circulatory system do? 
a)
pumps blood through the whole body 
b)
pumps blood to the brain 
c)
pumps blood to the lungs
d)
pumps blood
20.
Carbon dioxide is considered a _________________
a)
food
b)
waste
c)
energy
d)
fun party favor
21.
Identify
a)
Left atrium
b)
Right atrium
c)
Left ventricle
d)
Right ventricle
22.
Identify
a)
Pulmonary veins
b)
Pulmonary artery
c)
Aorta
d)
Vena cava
23.
Identify
a)
Left atrium
b)
Right atrium
c)
Left ventricle
d)
Right ventricle
24.
Identify
a)
Left atrium
b)
Right atrium
c)
Left ventricle
d)
Right ventricle
25.
Identify
a)
Left atrium
b)
Right atrium
c)
Left ventricle
d)
Right ventricle
26.

The mammalian heart has ___ chambers.

a)

1

b)

2

c)

3

d)

4

27.
This chamber of the heart RECEIVES blood returning from the body
a)
Right Atrium
b)
Right Ventricle
c)
Left Atrium
d)
Left Ventricle
28.
What is pulmonary circulation?
a)
Blood travelling to and from the lungs
b)
Blood travelling to and from the body
c)
A blood clot in the lungs
d)
The vessel that brings blood to the lungs
29.
Blood circulation from the heart to the rest of the body is called
a)
Full body
b)
Systemic
c)
pulmonary
d)
heart to lung
30.
Which is NOT a function of the circulatory system?
a)
deliver O2 and nutrients to cells
b)
remove CO2 and wastes from cells
c)
break down carbohydrates into glucose
d)
transport other materials through body
31.
Structure(s) that keep the blood flowing in one direction.
a)
Valve(s)
b)
Septum(s)
c)
Neuron(s)
d)
Bronchiole(s)
32.

These cells play a vital role in defending the body against infection

a)

Leucocytes

b)

Erythrocytes

c)

Blastocytes

d)

Plasmacytes

33.

_______ function in the life-saving process of clotting blood.

a)

Phagocytes

b)

Leucocytes

c)

Erythrocytes

d)

Platelets

34.

A fish's heart has ___ chambers.

a)

1

b)

2

c)

3

d)

4

35.

True or false:

Blood traveling in veins is blue.

a)

True

b)

False

36.

True or false:

Arteries always carry blood away from the heart.

a)

True

b)

False

37.

True or false:

Arteries always carry oxygenated blood.

a)

True

b)

False

38.

The blood in the vena cava is...

a)

oxygenated, returning to the heart

b)

deoxygenated, returning to the heart

c)

oxygenated, leaving the heart

d)

deoxygenated, leaving the heart

39.

An open circulatory system is one that has:

a)

no valves present

b)

no heart to pump the fluid

c)

no vessels at all

d)

no distinction between blood and tissue fluid

40.

What is the smallest type of cell in the blood called?

a)

leucocytes

b)

erythrocytes

c)

lymphocytes

d)

monocytes

41.

thin walled upper heart chamber which receives blood and pump blood to the ventricles.

a)

Atria (Atrium)

b)

Ventricle

c)

Aorta

d)

Lungs

42.

muscular, thick-walled lower chamber that pumps blood from the heart.

a)

Atria (Atrium)

b)

Ventricle

c)

Aorta

d)

Lungs

43.

prevents backwards flow of blood in the heart

a)

Aorta

b)

Valve

c)

Atrium

d)

Capillaries

44.

muscular, thick-walled lower chamber that pumps blood from the heart.

a)

Atria (Atrium)

b)

Ventricle

c)

Aorta

d)

Lungs

45.

carry blood away from the heart.

a)

Capillaries

b)

Veins

c)

Arteries

d)

Lungs

46.

carry blood towards the heart.

a)

Veins

b)

Arteries

c)

Capillaries

d)

Small Intestines

47.

connects arteries to veins, site of exchange for nutrients, waste and oxygen.

a)

Capillaries

b)

Veins

c)

Arteries

d)

Valves

48.

liquid portion of blood, typically yellow, where nutrients are dissolved.

a)

Blood

b)

Plasma

c)

Lymph

d)

Mucus

49.

protein in every red blood cell that carries oxygen.

a)

Saliva

b)

Mucus

c)

Hemoglobin

d)

Goblin

50.

white blood cells that helps to defend our body from diseases

a)

Hemocytes

b)

Leukocytes

c)

Nanobytes

d)

Nanocytes

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