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Worksheets

Circulatory/Respiratory Systems

Total questions: 20

Worksheet time: 7mins

Name
Class
Date
1.
The two larger types of blood vessels are:
a)
heart and lungs
b)
arteries and heart
c)
arteries and veins
d)
veins and heart
2.
What is the main bone structure that protects the lungs
a)
Vertebrae
b)
Rib cage
c)
Skull
d)
Pelvis
3.
When you breathe, your lungs take in ___ and remove ___. 
a)
air/oxygen
b)
oxygen/carbon dioxide 
c)
carbon dioxide/waste 
d)
waste/air 
4.
Which system works closely with the respiratory system?
a)
skeletal system
b)
circulatory system
c)
excretory system
d)
digestive system
5.
What are the main organs of the respiratory system?
a)
muscles
b)
lungs
c)
nose and mouth
d)
bronchi
6.
What is the main function of the heart ? 
a)
The heart circulates blood and oxygen throughout the body.
b)
The heart is the control centers for all body activities.
c)
The heart gets rid of the wastes in your body produced by homeostasis. 
d)
The heart adds oxygen to the blood
7.
Which does not make up the circulatory system?
a)
heart
b)
blood
c)
lungs
d)
blood vessels
8.
The heart pumps blood to get ________ to our cells.
a)
carbon dioxide
b)
urea
c)
oxygen
9.
What is the main organ in the circulatory system?
a)
vein
b)
lung
c)
heart
d)
aorta 
10.
Which describes a task performed by the circulatory system?
a)
creating red blood cells
b)
sending messages to the brain
c)
transporting waste materials
d)
producing energy from food
11.
In which system of the human body does the heart belong?
a)
Nervous
b)
Skeletal
c)
Cardiovascular
d)
Digestive
12.
Your heart is an example of which type of muscle?
a)
a big one
b)
voluntary
c)
involuntary
d)
bicep
13.

Which body system is shown here?

a)

circulatory system

b)

respiratory system

14.

Which body system is shown here?

a)

circulatory system

b)

respiratory system

15.

Arteries carry blood ____________________, veins carry blood _________________

a)

back to the heart, away from the heart

b)

away from the heart, back to the heart

c)

to outer space, back to Earth

d)

to the front office, to Ms. Lee's room

16.

What is the main function of the Respiratory System?

a)

blood transports nutrients and gases through the body

b)

exchanges gases between the body and the environment

c)

breaks down food to provide energy

d)

removes solid, liquid and gas waste from the body

17.

As your physical activity ____________, your heart rate ___________ and your breathing rate _______________

a)

decreases, increases, stays the same

b)

increases, increases, increases

c)

increases, decreases, increases

d)

decreases, stays the same, increases

18.
maintain a stable internal environment 
a)
homeostasis
b)
respiration
19.

the smallest blood vessels in your body

a)

arteries

b)

veins

c)

capillaries

d)

aorta

20.

What is the muscle that allows you to breathe involuntarily?

a)

diaphragm

b)

heart