HESI HUMAN ANATOMY AND PHYSIOLOGY
2024 V1 EXERCISE QUESTIONS WITH VERIFIED
ANSWERS ALREADY GRADED A+|STUDY TO
PASS
What is the driving force for blood flow through the systemic circuit?
A) mean arterial pressure
B) left ventricular pressure
C) central venous pressure
D) right atrial pressure
E) capillary hydrostatic pressure - ANSWERS -A
Which of the following equations is correct?
A) resistance = (length × radius4) / viscosity
B) mean arterial pressure = cardiac output × stroke volume
C) cardiac output = mean arterial pressure × total peripheral resistance
D) cardiac output = stroke volume × heart rate
E) mean arterial pressure = resistance × viscosity - ANSWERS -D
In comparison to the systemic circuit, the pulmonary circuit
A) has an equal pressure gradient to drive blood flow.
B) has lower blood flow.
C) is under greater pressure.
D) transports deoxygenated blood.
E) has lower resistance to blood flow. - ANSWERS -E
,Which of the following would increase the rate of blood flow through a blood vessel?
A) increased pressure of the blood entering the vessel
B) increased viscosity of the blood
C) constriction of the blood vessel
D) decreased radius of the vessel
E) increased length of the vessel - ANSWERS -A
Which of the following is NOT a component of the microcirculation?
A) veins
B) arterioles
C) metarterioles
D) capillaries
E) venules - ANSWERS -A
What is a measure of the change in vascular volume as pressure within the vessel is altered?
A) blood flow
B) compliance
C) resistance
D) the pressure gradient
E) diffusibility - ANSWERS -B
A person goes to the doctor and is told his blood pressure is 90/60 and his pulse is 80. Which of the
following is FALSE?
A) Pulse pressure is 80 mm Hg.
B) Heart rate is 80.
C) Diastolic pressure is 60.
D) Systolic pressure is 90 mm Hg.
E) Mean arterial pressure is 70 mm Hg. - ANSWERS -A
,Which of the following equations correctly relates flow, pressure, and resistance?
A) resistance = flow × pressure
B) pressure = flow × resistance
C) flow = pressure × resistance
D) flow = pressure - resistance
E) flow = pressure + resistance - ANSWERS -B
Blood pressure is usually estimated from indirect measurements of the pressure in what structure?
A) brachial artery
B) radial artery
C) left ventricle
D) femoral artery
E) aorta - ANSWERS -A
What is the purpose of extrinsic control of arteriolar smooth muscle contractile activity?
A) regulate blood flow through specific capillary beds
B) regulate heart rate
C) regulate cardiac output
D) regulate stroke volume
E) regulate mean arterial pressure - ANSWERS -E
Which of the following chemicals' concentration is NOT increased by an elevation in metabolic activity?
A) potassium
B) pyruvic acid
C) carbon dioxide
D) hydrogen
E) oxygen - ANSWERS -E
, Chemicals released by metabolically active cells will cause which of the following?
A) contraction of arteriolar smooth muscle to decrease blood flow
B) contraction of capillary smooth muscle to increase blood flow
C) relaxation of capillary smooth muscle to decrease blood flow
D) contraction of arteriolar smooth muscle to increase blood flow
E) relaxation of arteriolar smooth muscle to increase blood flow - ANSWERS -E
What is a decrease in tissue oxygen called?
A) hyperoxia B) ischemia C) hypoxemia D) hyperemia E) hypoxia - ANSWERS -E
What is an increase in blood flow in response to an increase in tissue metabolic activity called?
A) hypoxia
B) hyperoxia
C) reactive hyperemia
D) active hyperemia
E) ischemia - ANSWERS -D
In response to a decrease in tissue metabolic activity, tissue oxygen concentrations ________, which
causes
a(n) ________.
A) decrease : active hyperemic response
B) decrease : increase in tissue ischemia
C) increase : constriction of the arterioles
D) decrease : dilation of the arterioles
E) increase : active hyperemic response - ANSWERS -C
A decrease in pressure within an arteriole will initiate a(n)
A) cardiac and venous baroreceptor reflex.
B) arterial baroreceptor reflex.
2024 V1 EXERCISE QUESTIONS WITH VERIFIED
ANSWERS ALREADY GRADED A+|STUDY TO
PASS
What is the driving force for blood flow through the systemic circuit?
A) mean arterial pressure
B) left ventricular pressure
C) central venous pressure
D) right atrial pressure
E) capillary hydrostatic pressure - ANSWERS -A
Which of the following equations is correct?
A) resistance = (length × radius4) / viscosity
B) mean arterial pressure = cardiac output × stroke volume
C) cardiac output = mean arterial pressure × total peripheral resistance
D) cardiac output = stroke volume × heart rate
E) mean arterial pressure = resistance × viscosity - ANSWERS -D
In comparison to the systemic circuit, the pulmonary circuit
A) has an equal pressure gradient to drive blood flow.
B) has lower blood flow.
C) is under greater pressure.
D) transports deoxygenated blood.
E) has lower resistance to blood flow. - ANSWERS -E
,Which of the following would increase the rate of blood flow through a blood vessel?
A) increased pressure of the blood entering the vessel
B) increased viscosity of the blood
C) constriction of the blood vessel
D) decreased radius of the vessel
E) increased length of the vessel - ANSWERS -A
Which of the following is NOT a component of the microcirculation?
A) veins
B) arterioles
C) metarterioles
D) capillaries
E) venules - ANSWERS -A
What is a measure of the change in vascular volume as pressure within the vessel is altered?
A) blood flow
B) compliance
C) resistance
D) the pressure gradient
E) diffusibility - ANSWERS -B
A person goes to the doctor and is told his blood pressure is 90/60 and his pulse is 80. Which of the
following is FALSE?
A) Pulse pressure is 80 mm Hg.
B) Heart rate is 80.
C) Diastolic pressure is 60.
D) Systolic pressure is 90 mm Hg.
E) Mean arterial pressure is 70 mm Hg. - ANSWERS -A
,Which of the following equations correctly relates flow, pressure, and resistance?
A) resistance = flow × pressure
B) pressure = flow × resistance
C) flow = pressure × resistance
D) flow = pressure - resistance
E) flow = pressure + resistance - ANSWERS -B
Blood pressure is usually estimated from indirect measurements of the pressure in what structure?
A) brachial artery
B) radial artery
C) left ventricle
D) femoral artery
E) aorta - ANSWERS -A
What is the purpose of extrinsic control of arteriolar smooth muscle contractile activity?
A) regulate blood flow through specific capillary beds
B) regulate heart rate
C) regulate cardiac output
D) regulate stroke volume
E) regulate mean arterial pressure - ANSWERS -E
Which of the following chemicals' concentration is NOT increased by an elevation in metabolic activity?
A) potassium
B) pyruvic acid
C) carbon dioxide
D) hydrogen
E) oxygen - ANSWERS -E
, Chemicals released by metabolically active cells will cause which of the following?
A) contraction of arteriolar smooth muscle to decrease blood flow
B) contraction of capillary smooth muscle to increase blood flow
C) relaxation of capillary smooth muscle to decrease blood flow
D) contraction of arteriolar smooth muscle to increase blood flow
E) relaxation of arteriolar smooth muscle to increase blood flow - ANSWERS -E
What is a decrease in tissue oxygen called?
A) hyperoxia B) ischemia C) hypoxemia D) hyperemia E) hypoxia - ANSWERS -E
What is an increase in blood flow in response to an increase in tissue metabolic activity called?
A) hypoxia
B) hyperoxia
C) reactive hyperemia
D) active hyperemia
E) ischemia - ANSWERS -D
In response to a decrease in tissue metabolic activity, tissue oxygen concentrations ________, which
causes
a(n) ________.
A) decrease : active hyperemic response
B) decrease : increase in tissue ischemia
C) increase : constriction of the arterioles
D) decrease : dilation of the arterioles
E) increase : active hyperemic response - ANSWERS -C
A decrease in pressure within an arteriole will initiate a(n)
A) cardiac and venous baroreceptor reflex.
B) arterial baroreceptor reflex.
