CAO PHYS Y2 MOD 3
- ANS-Pulmonary circulation functions to:
A. Bring blood into close contact with the alveoli
B. Promote gas exchange
C. Supply all body tissues
D. Carries oxygenated blood that is pumped out of the aorta to the rest of the body
- ANS-The external iliac arteries supply the lower limbs, pass under the inguinal ligaments to
enter the thigh and become the femoral arteries.
A. True
B. False
A - ANS-A vascular shunt is a short vessel that directly connects the arteriole and venule at
opposite ends of the capillary bed
A. True
B. False
A - ANS-Baroreceptor reflexes
A. Are located in the aortic arch and carotid sinuses
B. Stimulates the cardioacceleratory center
C. Results in an increase in blood pressure
D. B and C
A - ANS-Elastic arteries are INACTIVE during vasoconstriction and Muscular arteries are
ACTIVE during vasoconstriction
A. True
B. False
A - ANS-Epinephrine and norepinephrine
A. Released from adrenal medulla hormones
B. Released from the atria of the heart
C. Enhances a parasympathetic response
D. Stimulates intense vasodilation
A - ANS-The terminal arteriole feeds the capillary bed, leading into a metarteriole which is
continuous with the thoroughfare channel, ultimately joining the postcapillary venule and drains
the bed.
A. True
B. False
A - ANS-The Tunica Externa layer:
- ANS-Pulmonary circulation functions to:
A. Bring blood into close contact with the alveoli
B. Promote gas exchange
C. Supply all body tissues
D. Carries oxygenated blood that is pumped out of the aorta to the rest of the body
- ANS-The external iliac arteries supply the lower limbs, pass under the inguinal ligaments to
enter the thigh and become the femoral arteries.
A. True
B. False
A - ANS-A vascular shunt is a short vessel that directly connects the arteriole and venule at
opposite ends of the capillary bed
A. True
B. False
A - ANS-Baroreceptor reflexes
A. Are located in the aortic arch and carotid sinuses
B. Stimulates the cardioacceleratory center
C. Results in an increase in blood pressure
D. B and C
A - ANS-Elastic arteries are INACTIVE during vasoconstriction and Muscular arteries are
ACTIVE during vasoconstriction
A. True
B. False
A - ANS-Epinephrine and norepinephrine
A. Released from adrenal medulla hormones
B. Released from the atria of the heart
C. Enhances a parasympathetic response
D. Stimulates intense vasodilation
A - ANS-The terminal arteriole feeds the capillary bed, leading into a metarteriole which is
continuous with the thoroughfare channel, ultimately joining the postcapillary venule and drains
the bed.
A. True
B. False
A - ANS-The Tunica Externa layer:
