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.   blood viscosity and length of the vessel
C.   pressure difference 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.   TRUE
B.   FALSE
Question #3
Which of the following is not correct?
A.   pulse pressure is equal to the systolic minus the diastolic pressures
B.   systolic pressure is the arterial pressure during systole
C.   diastolic pressure is the arterial pressure during diastole
D.   blood velocity in the arteries is fast to slow (50 cm/s to 1 cm/s)
E.   the mean arterial pressure = systolic pressure + 1/3 the pulse pressure
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.   FALSE
B.   TRUE
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.   angiotensin II, aldosterone and atrial natriuretic peptide (ANP)
C.   ↑ of the carotid and aortic bodies, 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.   pulsations of nearby arteries, contraction of the heart and gravity
C.   skeletal and respiratory pumps, contraction of the (larger) lymphatic vessels, and pulsations of nearby arteries
Question #8
Lymph has the exact same composition as the blood plasma.
A.   FALSE
B.   TRUE
Question #9
Which of the following is not true of the spleen?
A.   stores iron, platelets and blood
B.   all the above
C.   contains macrophages and lymphocytes that remove microbes and cancer cells from the lymph
D.   site of erythrocyte production in the fetus
E.   destroys worn-out blood cells
Question #10
Lymph nodes contain lymphocytes that phagocytize bacteria that get through the mucosal epithelium.
A.   FALSE
B.   TRUE
Question #11
Which is an effect of atrial natriuretic peptide (ANP)?
A.   ↑ Na+ and H2O absorption by kidneys and vasoconstriction
B.   ↑ Na+ and H2O secretion by kidneys and ↓ ADH secretion
C.   ↑ ADH secretion and ↑ Na+ and H2O absorption by kidneys
D.   vasoconstriction and ↑ Na+ and H2O absorption by kidneys
Question #12
Where does the development of the membrane receptors on T cells (TCRs) occur?
A.   spleen
B.   parathyroid glands
C.   thyroid gland
D.   red bone marrow
E.   thymus gland

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