Chapter 19 Flashcards Preview

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Flashcards in Chapter 19 Deck (22):
1

The vessel layer that has a direct role in vasoconstriction is the __________.

tunica media

2

Blood flows directly from __________ into capillary beds.

arterioles

3

The vessels that exhibit the lowest level of permeability are the __________.

continuous capillarie

4

When would the capillary beds surrounding the gastrointestinal organs be open?

when digesting a meal

5

Which of the following is true when comparing arteries and veins?

Arteries carry blood away from the heart; veins carry blood to the heart.

6

Blood flow would be increased by __________.

increasing cardiac output

7

systolic pressure

peak of aortic pressure

8

diastolic pressure

owest level of aortic pressure

9

pulse pressure

the difference between systolic and diastolic pressure

10

mean arterial pressure

pressure that propels blood to the tissues

11

Which of the following acts on the kidneys and blood vessels to raise blood pressure?

antidiuretic hormone

12

Hypertension is defined physiologically as a condition of sustained arterial pressure of __________ or higher.

140/90

13

If the net filtration pressure (NFP) is positive, then fluid is reabsorbed into the blood.

False

14

Which of the following would experience increased blood flow during exercise?

skin

15

Fluids would be likely to leave or filter out of the capillary if __________.

net hydrostatic pressure (HP) is greater than net osmotic pressure (OP)

16

Cardiogenic shock is most likely to result from __________.

multiple heart attacks

17

Blood from the brain is returned to the heart via the __________.

superior vena cava

18

The hepatic portal system collects blood from the __________ and then routes it to the __________.

GI tract; liver

19

nitric oxide

metabolic control of blood flow

20

stretch of vascular smooth muscle

myogenic control of blood flow

21

sympathetic impulses

nervous system control of blood flow

22

angiotensin II

hormonal control of blood flow