AnswersAnatomy Physiology BRespiratory System Career Specialties

Respiratory System Career Specialties — Unit test Answers

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Which statement is true?

A
Coronary veins are the blood vessels that bring oxygenated blood from the heart muscle to the right atrium of the heart.
B
Blood pumps through the aorta and into smaller blood vessels to supply the cells of the body with oxygen.
C
The left coronary artery moves oxygenated blood into the muscle of the right side of the heart.
D
Systolic blood pressure is a measurement taken when the heart is at rest and refilling with blood.
22
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What causes exhalation?

A
a signal from the medulla to the mouth and nose
B
a signal from the alveoli to the medulla
C
a signal from the diaphragm to the medulla
D
a signal from the medulla to the lungs
23

In the coronary circuit, the myocardium performs the coordinated contractions that pump blood out of the ventricles. These contractions are the

A
coronary arteries.
B
heart rate.
C
heartbeat.
D
aorta.
24

The structures of the upper respiratory system

A
include the lungs.
B
are located inside the thorax.
C
allow gases to enter and escape the body.
D
allow for movement of gases in and out of cells.
25

What happens directly after hemoglobin binds with carbon dioxide from cells in the body?

A
Carbon dioxide is exhaled through the lungs.
B
Carbon dioxide is carried through the blood vessels back to the lungs.
C
Carbon dioxide is changed into oxygen in the hemoglobin.
D
Carbon dioxide is mixed with plasma to be diffused into blood.

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Respiratory System Career Specialties

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