Physiology V01 - Introduction to Human Physiology » Fall 2021 » Lecture Quiz 9

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Question #1
What factors are directly proportional to the flow? 
A.   pressure difference and radius of the vessel
B.   pressure difference and length of the vessel
C.   blood viscosity and length of the vessel
D.   peripheral resistance and blood viscosity
Question #2
The peripheral resistance (PR) is directly proportional to the blood viscosity, vessel length and vessel radius.
A.   FALSE
B.   TRUE
Question #3
Which of the following is not correct?
A.   pulse pressure is equal to the systolic minus the diastolic pressures
B.   blood velocity in the arteries is fast to slow (50 cm/s to 1 cm/s)
C.   systolic pressure is the arterial pressure during systole
D.   the mean arterial pressure = systolic pressure + 1/3 the pulse pressure
E.   diastolic pressure is the arterial pressure during diastole
Question #4
At the venous end of a capillary, the capillary fluid pressure (CHP) is greater than the blood colloid osmotic pressure (BCOP), as a result fluids are filtered from the blood into the interstitial spaces.
A.   TRUE
B.   FALSE
Question #5
Which of the following would cause vasoconstriction leading to an increase in PR and BP?
A.   ↑ of the carotid and aortic bodies, ↓ of the baroreceptors, and angiotensin II
B.   ↑ of the carotid and aortic bodies, aldosterone and atrial natriuretic peptide (ANP)
C.   angiotensin II, aldosterone and atrial natriuretic peptide (ANP)
Question #6
An increase in the metabolic rate of a tissue would lead to constriction of arterioles and precapillary sphincters, resulting in a decrease in blood flow to that tissue.
A.   TRUE
B.   FALSE
Question #7
What causes lymph to flow?
A.   contraction of the heart, contraction of the (larger) lymphatic vessels and gravity
B.   skeletal and respiratory pumps, contraction of the (larger) lymphatic vessels, and pulsations of nearby arteries
C.   pulsations of nearby arteries, contraction of the heart and gravity
Question #8
Lymph has the exact same composition as the blood plasma.
A.   TRUE
B.   FALSE
Question #9
Which of the following is not true of the spleen?
A.   contains macrophages and lymphocytes that remove microbes and cancer cells from the lymph
B.   all the above
C.   destroys worn-out blood cells
D.   stores iron, platelets and blood
E.   site of erythrocyte production in the fetus
Question #10
Lymph nodes contain lymphocytes that phagocytize bacteria that get through the mucosal epithelium.
A.   TRUE
B.   FALSE
Question #11
Which is an effect of atrial natriuretic peptide (ANP)?
A.   ↑ Na+ and H2O absorption by kidneys and vasoconstriction
B.   vasoconstriction and ↑ Na+ and H2O absorption by kidneys
C.   ↑ Na+ and H2O secretion by kidneys and ↓ ADH secretion
D.   ↑ ADH secretion and ↑ Na+ and H2O absorption by kidneys
Question #12
Where does the development of the membrane receptors on T cells (TCRs) occur?
A.   thyroid gland
B.   red bone marrow
C.   spleen
D.   parathyroid glands
E.   thymus gland

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