Question 1

The effect of beta1 stimulation causes:

Accepted Answer

A)   decreased heart rate.
B)   increased heart rate.
C)   decreased contractility.
D)   vasodilation. B

Question 2

The valve between the right ventricle and the pulmonary arteries is termed the:

Accepted Answer

A)   pulmonic semilunar valve.
B)   aortic semilunar valve.
C)   mitral semilunar valve.
D)   bicuspid semilunar valve. A

Question 3

The autonomic nervous system is divided into ________ major divisions.

Accepted Answer

A)   2
B)   4
C)   6
D)   8 A

Question 4

The only artery that carries unoxygenated blood is the:

Accepted Answer

A)   pulmonary artery.
B)   aorta.
C)   brachial artery.
D)   left coronary artery.

Question 5

A concept known as Starling's law of the heart is a result of the ________ of the ventricular myocardial fibers.

Accepted Answer

A)   decrease
B)   shrinking
C)   stretching
D)   stimulation

Question 6

Norepinephrine is the chemical neurotransmitter for the:

Accepted Answer

A)   parasympathetic nervous system.
B)   sympathetic nervous system.
C)   peripheral nervous system.
D)   cardiac nervous system.

Question 7

The effect of beta2 stimulation causes bronchial:

Accepted Answer

A)   constriction.
B)   dilation.
C)   spasms.
D)   secretions.

Question 8

When acetylcholine is released, it causes the heart rate to:

Accepted Answer

A)   slow and atrioventricular conduction rates to slow.
B)   increase and atrioventricular conduction rates to slow.
C)   slow and atrioventricular conduction rates to increase.
D)   increase and atrioventricular conduction rates to increase.

Question 9

The resistance against which the heart must pump is termed:

Accepted Answer

A)   preload.
B)   afterload.
C)   middleload.
D)   heartload.

Question 10

Blood pressure is affected by peripheral vascular resistance and cardiac:

Accepted Answer

A)   input.
B)   output.
C)   preload.
D)   stimulation.

Question 11

All of the following are signs of inadequate cardiac output EXCEPT:

Accepted Answer

A)   hypertension.
B)   shortness of breath.
C)   dizziness.
D)   low blood pressure.

Question 12

The amount of opposition to blood flow offered by the arterioles is known as:

Accepted Answer

A)   peripheral vascular resistance.
B)   blood pressure.
C)   cardiac output.
D)   preload.

Question 13

The result of the release of norepinephrine is the:

Accepted Answer

A)   increase in heart rate and vasodilation.
B)   decrease in heart rate and vasoconstriction.
C)   increase in heart rate and vasoconstriction.
D)   decrease in heart rate and vasodilation.

Question 14

The valve between the right atrium and the right ventricle is the:

Accepted Answer

A)   pulmonary semilunar valve.
B)   mitral semilunar valve.
C)   bicuspid semilunar valve.
D)   tricuspid semilunar valve.

Question 15

Acetylcholine is the chemical neurotransmitter for the ________ nervous system.

Accepted Answer

A)   parasympathetic
B)   sympathetic
C)   peripheral
D)   None of the above

Question 16

The term that is synonymous with ventricular contraction is:

Accepted Answer

A)   diastole.
B)   systole.
C)   preload.
D)   heart rate.

Question 17

The formula for cardiac output is stroke volume × ________.

Accepted Answer

A)   respiratory rate
B)   blood pressure
C)   heart rate
D)   blood volume

Question 18

The system that is responsible for regulating the calmer functions of our existence is the:

Accepted Answer

A)   parasympathetic nervous system.
B)   peripheral nervous system.
C)   sympathetic nervous system.
D)   All of the above
E)   None of the above

Question 19

The system that is responsible for the preparation of the body for physical activity is the:

Accepted Answer

A)   central nervous system.
B)   peripheral nervous system.
C)   sympathetic nervous system.
D)   parasympathetic nervous system.

Question 20

The term that is synonymous with ventricular relaxation is:

Accepted Answer

A)   diastole.
B)   systole.
C)   stroke volume.
D)   afterload.

Exam 2: Cardiovascular Physiology: Function

The effect of beta₁ stimulation causes: