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Human Body Systems Practice

Total questions: 63

Worksheet time: 3hrs 9mins

Name
Class
Date
1.
What systems brings in oxygen for your cells to use?
a)
reproductive system
b)
digestive system
c)
respiratory system
d)
endocrine system
2.
Digested food is absorbed in the_______.
a)
colon
b)
large intestine
c)
small intestine
d)
stomach
3.
The muscular organ that pumps blood through out your body is your _________
a)
diaphragm
b)
heart
c)
larynx
d)
pharynx
4.
Oxygen and carbon dioxide move in and out of blood through the walls of the __________
a)
arteries
b)
capillaries
c)
veins
d)
vessels
5.
Food is broken down to supply energy for your body in the ____________
a)
digestive system
b)
endocrine system
c)
excretory system
d)
reproductive system
6.

The major organ of this system is the brain

a)

Circulatory System

b)

Digestive System

c)

Nervous System

d)

Immune System

7.

How many rooms or chambers are in the heart?

a)

8

b)

4

c)

2

d)

6

8.

What is the main job, or function of red blood cells?

a)

To destroy germs.

b)

To help your muscles.

c)

To carry oxygen through your body.

d)

To carry food through your body.

9.

True or false: Saliva or spit helps to break down food in our mouth?

a)

True

b)

False

10.

What is the name of the gas we breathe in our lungs to survive?

a)

Carbon Dioxide

b)

Laughing Gas

c)

Steam

d)

Oxygen

11.

What is the name of the system that breaks down food?

a)

Skeletal System

b)

Cardiovascular System

c)

Respiratory System

d)

Digestive System

12.

This body system uses our lungs to work properly.

a)

Digestive System

b)

Respiratory System

c)

Cardiovascular System

d)

Muscular System

13.

As your body works harder, what happens to your HEART rate?

a)

Increases

b)

Decreases

c)

Beats backward

d)

Stays the same

14.

What important substance is replenished as blood flows through your heart?

a)

Nitrogen

b)

Iron

c)

Water

d)

Oxygen

15.

Where does digestion start?

a)

stomache

b)

throat

c)

intestines

d)

mouth

16.

Your lungs are part of which body system?

a)

muscular

b)

circulatory

c)

digestive

d)

respiratory

17.

If you take a rest after running a mile, what happens to your BREATHING rate?

a)

decreases

b)

increases

c)

stays the same

d)

none of these

18.

Which system pumps blood through your body?

a)

respiratory

b)

digestive

c)

circulatory

d)

muscular

19.

As you exercise, your circulatory systems works with what other system to take in oxygen?

a)

muscular

b)

digestive

c)

respiratory

d)

endocrine

20.

Which systems work together?

a)

the digestive system and the muscular system

b)

the skeletal system and the circulatory system

c)

the muscular system and the nervous system

d)

all of the systems work together

21.

What is the name of the long tube in the digestive system that connects the mouth to the stomach?

a)

ligament

b)

small intestine

c)

esophagus

d)

tendon

22.

Which of the following are involuntary muscles?

a)

arm and leg

b)

heart beating and eye blinking

23.

Which system breaks down the food you eat so your body will have energy?

a)

digestive system

b)

skeletal system

c)

nervous system

24.

Which system lets you know that you cut your finger?

a)

muscular system

b)

nervous system

c)

digestive system

25.

Your heart is the same size as:

a)

your clenched fist

b)

a loaf of bread

c)

your brain

26.

How many bones are in the human body?

a)

100

b)

206

c)

500

27.

How does the skull protect our body?

a)

It protects our lungs

b)

It protects our stomach

c)

It protects our brain

28.
What part of blood is responsible for carrying oxygen and carbon dioxide to body cells?
a)
Red Blood Cells
b)
White Blood Cells
c)
Platelets
d)
Plasma
29.
What part of blood is responsible for fighting infections?
a)
Red Blood Cells
b)
White Blood Cells
c)
Platelets
d)
Plasma
30.
What part of blood is responsible for carrying wastes, nutrients, and minerals?
a)
Red Blood Cells
b)
White Blood Cells
c)
Platelets
d)
Plasma
31.
THE HEART AND THE BLOOD VESSELS AND THE BLOOD MAKE UP WHAT SYSTEM?
a)
URINARY
b)
SKELETAL
c)
CIRCULATORY
d)
MUSCULAR
32.
THE TYPE OF BLOOD VESSELS THAT RETURNS BLOOD TO THE HEART 
a)
ARTEY
b)
VEIN
c)
CAPILLARIES
d)
BLOOD VESSEL
33.
What do the arteries do?
a)
pumps blood to the heart
b)
pumps blood to and from the heart
c)
carry's blood away from the heart 
d)
a muscle 
34.
What is the function of the heart?
a)
To pump blood around the body
b)
To remove oxygen from the blood
c)
To allow blood to flow through it 
d)
To breath
35.
What is the main organ in the circulatory system?
a)
vein
b)
lung
c)
heart
d)
aorta 
36.
How many types of blood vessels are in our body?
a)
1
b)
2
c)
3
d)
4
37.

Arteries carry oxygen rich blood away from the heart.

a)

True

b)

False

38.

Veins carry oxygen poor blood back to the heart.

a)

False

b)

True

39.

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.

40.

How does the heart work?

a)

It pumps blood first to the lungs, back to the heart and then around the rest of the body.

b)

It pumps blood first to the rest of the body, back to the lungs and then to the heart.

c)

It pumps blood around the rest of the body, back to the heart and then to the lungs,

41.
______________ are the second largest blood vessel. 
a)
Arteries
b)
Veins
c)
Capillaries
42.
The circulatory system works with the __________ system to obtain energy from nutrients that we eat. 
a)
respiratory 
b)
digestive
c)
skeletal
d)
nervous
43.
Number 3 is pointing to the...
a)
Small intestine
b)
Rectum
c)
Large intestine
d)
Stomach
44.
Number 2 is pointing to the...
a)
Esophagus
b)
Stomach
c)
Small intestine
d)
Anus
45.
Which organ pushes food down to the stomach?
a)
Mouth
b)
Esophagus
c)
Rectum
d)
Large intestine
46.
As waste moves through the digestive system, the ______ absorbs water before storing waste in the rectum.
a)
Small intestine
b)
Stomach
c)
Esophagus
d)
Large intestine
47.
Which is NOT a function of the Digestive System?
a)
To rid the body of solid waste
b)
Absorb nutrients for energy & growth
c)
Break down nutrients from food
d)
Pump blood around the body
48.

What is the correct order of digestion?

a)

Mouth - stomach - esophagus - Large intestine - Small intestine - anus - rectum

b)

Mouth - esophagus - stomach - gall bladder - small intestine - rectum - anus - large intestine

c)

Mouth - pancreas - stomach - rectum - gall bladder - small intestine - rectum - anus

d)

Mouth - esophagus - stomach - small intestine - large intestine - rectum - anus

49.
The main purpose of the ____________ system is to break food particles into pieces that can be used.
a)
circulatory
b)
respiratory
c)
digestive
d)
skeletal
50.

The windpipe is also called

a)

trachea

b)

alveoli

51.

When we breathe out , ................. leaves our body.

a)

oxygen

b)

carbon dioxide

52.

Inside the lungs there are lots of little sacks called.......

Here, oxygen passes into the blood and carbon dioxide leaves the blood.

a)

lungs

b)

alveoli

53.

They are two tubes .Oxygen enters the lungs through .......

a)

bronchi

b)

alveoli

54.

What do we take in when we inhale?

a)

carbon dioxide

b)

oxygen

c)

lungs

55.

What do we let out when we exhale?

a)

oxygen

b)

Carbon dioxide

c)

lungs

56.

What is/are the function/s of the respiratory system?

a)

to deliver oxygen from different organs

b)

to remove carbon dioxide from the body

c)

to get oxygen from the environment

d)

to collect carbon dioxide from different organs

57.
Which is a characteristic of bacteria?
a)
large in size
b)
found only in one particular environment
c)
made up of many different cells working together
d)
able to survive as a single cell
58.
Which organism is best classified as a single-celled organism?
a)
grasshopper
b)
bacteria
c)
pine needle
d)
mole
59.
How are multicellular and unicellular organisms different?
a)
Multicellular organisms have more than one cell and are smaller than unicellular organisms.
b)
Unicellular organisms have more than one cell and are larger than multicellular organisms.
c)
Unicellular organisms have one cell and are smaller than multicellular organisms.
d)
Multicellular organisms have one cell and are larger than unicellular organisms.
60.
Which organism performs all life processes in one cell?
a)
bacteria
b)
grass
c)
mushroom
d)
butterfly
61.

4. What does multicellular means?

a)

1. one cell

b)

2. no cell

c)

3. many cell

62.
Basic unit of life
a)
Cell
b)
Tissue
c)
Organ
d)
Organ System
63.
Molly is reading a book in science class. She reads one sentence that says, “This organism is capable of surviving as a single cell.” Which organism is she most likely reading about?
a)
amoeba
b)
flower
c)
mushroom
d)
insect

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