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1. In autoregulation of systemic arterioles, all of the following tend to increase blood
flow except ____.
A. low pH B. high carbon dioxide
C. high O2
D. adenosine
2. Exchange of nutrients and waste products across the capillary walls occurs through
the following routes except ___.
A. the fenestrations B. the intercellular cleft
C. the endothelial cell bodies D. the
epithelial cell bodies
3. Which of the following pressures is in favor of reabsorption through capillary wall?
A. plasma colloid osmotic pressure B. capillary blood hydrostatic pressure
C.
interstitial colloid osmotic pressure
4. Blood flow will increase if ___.
A. blood vessel radius decreases
B. blood pressure increases C. blood viscosity
increases
D. blood vessel length increases
5. If a person's systolic/diastolic arterial blood pressures are 110/80 mmHg, the mean
arterial blood pressure is ____.
A. 80 mmHg B. 90 mmHg C. 100 mmHg D. 110 mmHg
6. Which of the following is incorrect?
A. Blood cannot flow from an artery into a vein without passing through any capillary
network.
B. Blood can flow from an artery, through two capillary networks, into a vein.
C. Blood cannot flow from a vein into an artery without passing through the heart.
D. Blood can flow from a vein directly into a capillary network.
7. Which of the followings is primarily involved in regulating blood flow to a local
peripheral organ such as kidney but not in maintaining mean arterial blood pressure?
A. baroreceptor-initiated flexes.
B. chemoreceptor-initiated reflexes. C. reninangiotensin system. D. myogenic control
8. When mean arterial blood pressure drops, what will happen after all the regulatory
mechanisms are activated?
A. vasodilation in the kidneys
B. vasodilation in the intestines
C.
vasodilation in the brain
D. vasodilation in the skeletal muscle
9. Baroreceptors are found in ____.
A. femoral arteries B. renal arteries
arteries
C. aortic arch
10. Which of the followings has the greatest permeability to water?
A. the wall of elastic arteries
B. the wall of muscular arteries
veins
D. the wall of capillaries
D. coronary
C. the wall of
11. Which of the following is too big to penetrate capillary wall in most tissues?
A. Protein B. Amino acid
C. Glucose
D. Sodium ion
12. If a patient with liver disease produces much less plasma proteins than before, which
of the following will more likely happen?
A. decrease in the volume of tissue fluid B. increase in the volume of tissue fluid
(edema)
C. no change in the volume of tissue fluid
13. Reabsorption is the process of ____.
A. net fluid movement from plasma to interstitium
B. net fluid movement
from interstitium to plasma C. diffusion of individual small ions from plasma into
interstitium
14. If the valves in the veins are defective and back flow occurs, which of the following
can still assist venous blood flow back to the right atrium?
A. inspiration B. skeletal muscle contraction
C. expiration D. a higher blood
pressure in systemic capillaries than right atrium
15. Which organ has the highest priority of receiving blood supply?
A. bones
B. skeletal muscle
C. heart
D. skin
16. Accumulation of adenosine in a local tissue causes ____.
A. vasodilation in the same area B. extensive vasodilation throughout the whole
body C. vasoconstriction in the same area D. extensive vasoconstriction throughout the
whole body
17. Which of the followings plays the least important role in autoregulating blood flow
to a local tissue?
A. local accumulation of CO2
B. chemoreceptor-initiated reflexes
C. local
decrease in pH
D. local decrease in oxygen content
18. Activation of baroreceptors by stretching them to a greater extent causes ___.
A. vasodilation in only one organ B. vasodilation in all peripheral organs
C. vasoconstriction in only one organ
D. vasoconstriction in all peripheral organs
19. Antidiuretic hormone induces ___.
A. vasoconstriction B. vasodilation
C. no effect on blood vessels
20. Angiotensin II has the effect of___.
A. inhibiting secretion of aldosterone
B. inducing vasodilation
thirst D. stimulating cardiac contractility
21. Brain tissues are ___.
C. inducing
A. resistant to ischemia
B. susceptible to ischemia C. able to recover after 20
min of ischemia D. often short of blood supply when mean arterial pressure varies in the
range of 60-160 mmHg.
22. A decrease in O2 content in only a few alveoli causes ____.
A. constriction of near-by arterioles B. dilation of near-by arterioles
on near-by arterioles
D. extensive vasoconstriction in systemic circulation.
KEY
1C
2D 3A
4B 5B
6A 7D
11A 12B 13B 14D 15C 16A 17B
21B 22A
8C
9C
10D
18B 19A 20C
C. no effect