The Cardiovascular and Respiratory Systems Answers

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What function do capillaries serve in the cardiovascular system?

A
carry blood to the brain
B
return blood to the lungs
C
help control body temperature
D
replace old blood cells
2
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The aorta carries blood out of the heart to the rest of the body. Please select the best answer from the choices provided.

A
T
B
F
3

All cardiovascular diseases are caused by poor lifestyle choices.

A
T
B
F
4

Once entering the nose, air moves through both the pharynx and larynx.

A
T
B
F
5

White blood cells prevent the loss of blood by causing clotting. Please select the best answer from the choices provided.

A
T
B
F
6

What percentage of blood is made up of plasma?

A
55%
B
40%
C
10%
D
5%
7

Your friend Amanda suffers from a condition that reduces her blood's ability to carry oxygen. Which of the following is the name of that condition?

A
emphysema
B
hemophilia
C
leukemia
D
anemia
8

How many chambers does the heart contain?

A
3
B
4
C
5
D
6
9

Nutrients and waste both enter and leave cells through a process called __________.

A
effusion
B
diffusion
C
fusion
D
emulsion
10

The human cardiovascular system is considered closed because __________.

A
blood is continuously circulated in the body.
B
blood provides nutrients to organs.
C
blood collects oxygen from the lungs
D
there are no holes for blood to enter or leave the system

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