PhysE4-2

111) Blood pressure is measured with a A. sphygmomanometer. B. electrocardiograph. C. spirometer. D. stethoscope.

A

117) Dangerously low blood pressure that results from infection is A. septic shock. B. anaphylactic shock. C. neurogenic shock. D. cardiogenic shock.

A

93) Venous return is increased by all of the following except A. exhalation. B. the skeletal muscle pump. C. hypertension. D. sympathetic stimulation of the veins.

A

Dizziness during hyperventilation is due to a decrease in cerebral blood flow. The decreased blood flow is caused by A. vasodilation. B. decreased stroke volume. C. vasoconstriction. D. decreased respiration.

A

105) Cardiovascular changes resulting from moderate exercise include A. increased total peripheral resistance. B. increased blood flow to the skin. C. increased visceral blood flow. D. decreased stroke volume.

B

112) As age increases, the maximum cardiac rate will A. increase. B. decrease. C. remain unchanged.

B

89) Stroke volume is affected by all of the following EXCEPT A. total peripheral resistance. B. emotional stress. C. cardiac contractility. D. end diastolic volume (EDV).

B

91) According to the Frank-Starling Law of the heart, as contraction strength increases the stroke volume A. decreases. B. increases. C. shows no change.

B

A decrease in total peripheral resistance would cause blood flow to A. increase. B. decrease. C. remain unchanged.

B

__________ is a steroid hormone secreted by the adrenal cortex which stimulates kidney salt reabsorption. A. ADH B. Aldosterone C. Renin D. Angiotensin

B

92) In response to increased ventricular filling A. total peripheral resistance increases. B. sympathetic nerves release norepinephrine. C. myocardial cells stretch. D. myocardial contractility increases.

C

99) Increased blood flow resistance is caused by A. increased blood vessel length. B. decreased blood viscosity. C. vasodilation. D. increased blood pressure.

C

At rest, blood flow is greatest in the A. skin and GI tract. B. brain and liver. C. GI tract and liver. D. kidneys and skin.

C

During exercise all of the following occur except A. deeper breathing. B. increased cardiac output. C. increased oncotic pressure. D. visceral vasoconstriction.

C

Inhibition of the baroreceptor reflex would not allow for proper regulation of A. cardiac rate. B. stroke volume. C. respiratory rate. D. blood pressure.

C

When the arteriovenous anastomoses are stimulated by sympathetic nerve fibers, the superificial capillary loops are A. engorged with blood. B. collapsed. C. by passed. D. not affected.

C

106) During exercise, all of the following occur EXCEPT A. increased stroke volume. B. increased cardiac rate. C. shunting of blood from visceral organs to skeletal muscle and heart. D. increased vasoconstriction of coronary arteries.

D

88) The volume of blood in the ventricles at the end of diastole is known as the A. after-load. B. pre-diastolic volume (PDV). C. stroke volume (SV). D. end-diastolic volume (EDV).

D

Arterial blood pressure is influenced by A. vasoconstriction. B. cardiac rate. C. cardiac output. D. All of the choices are correct.

D

Edema would be induced by all of the following except A. hypertension. B. protein malnutrition. C. lymphatic blockage. D. hyperthyroidism.

D

The mean arterial pressure of a person with a blood pressure of 128/68 would be A. 20. B. 60. C. 68. D. 88.

D

86) Stroke volume is increased as systemic blood pressure increases.

F

94) Edema may result from increased plasma protein concentrations.

F

During diastole, blood flow in the coronary arteries decreases.

F

Moderate exercise causes increased visceral organ blood flow.

F

100) Sympathetic stimulation promotes an overall increase in blood flow resistance.

T

114) An adult with a blood pressure of 130/95 would have mild hypertension.

T

85) Cardiac output increases as heart rate increases.

T

87) Norepinephrine agonists would increase cardiac output.

T

90) The Frank-Starling law of the heart describes an intrinsic regulation of stroke volume.

T

During exercise, blood flow to the heart increases.

T

Hypertension can be treated with sympathetic beta1-receptor antagonists.

T

Shock is characterized by hypotension.

T