Chapter 20 Practice Quiz

Question 1

Which is the most significant factor affecting peripheral vascular resistance?

Answer 1

blood vessels diameter

Question 2

Decrease of plasma osmotic pressure in the systemic capillary will __________________________reabsorption of fluid from interstitial space.

Answer 2

decrease

Question 3

Which of these conditions occur as a result of increased angiotensin II production?

Answer 3

.
vasoconstriction
b.
increase venous return
c.
increase preload
d.
increase aldosterone secretion

Question 4

When normal arterial blood pressure decreases, baroreceptors cause a response that

Answer 4

returns blood pressure to normal

Question 5

If the liver was unable to produce normal quantities of plasma proteins, plasma osmotic pressure would________________________________________________________________

Answer 5

decrease

Question 6

Increase of hydrostatic pressure in the capillary will ______________________________Net Filtration Rate .

Answer 6

increase

Question 7

__________ mechanisms are most important for regulating arterial pressure on a short-term basis; __________ mechanisms are most important for regulating arterial pressure on a long-term basis.

Answer 7

baroreceptor / hormonal

Question 8

At the capillary, __________ causes fluid to leave the capillary and __________ causes fluid to enter the capillary.

Answer 8

blood pressure (hydrostatic pressure) , osmosis (osmotic pressure)

Question 9

Which capillary type would you claim to be the most permeable to large proteins?

Answer 9

sinusoid

Question 10

Which statements are CORRECT?

Answer 10

Afterload is a resistance in arteries to ejection of blood by ventricles

Preload is the amount of venricular stretch at the end of ventricular diastole

inotropic agents alter contractility (force of the contraction of the heart)

Stroke volume is affected by afterload, preload, and contractility

Question 11

Which capillary type would you claim to be the most permeable to large proteins?

Answer 11

sinusoid

Question 12

Predict what would happen with the Heart rate (HR) , Stroke volume (SV), and Cardiac output (CO) with increased sympathetic output

Answer 12

Increased HR, increased SV, Increased CO

Question 13

Increased HR, increased SV, Increased CO

Answer 13

decrease

Question 14

Which of these conditions occur as a result of increased angiotensin II production?

Answer 14

Vasoconstriction
Increase venous return
Increase preload
Increase aldosterone secretion

Question 15

Which statement is INCORRECT?

Answer 15

a.
Afterload is a resistance in arteries to ejection of blood by ventricles

b.
Preload is the amount of venricular stretch at the end of ventricular diastole
c.
inotropic agents alter contractility (force of the contraction of the heart)
d.
Stroke volume is affected by afterload, preload, and

Question 16

Blood vessel diameter decreases(vasocondtriction) , peripheral vascular resistance ______________________

Answer 16

increases

Question 17

__________ mechanisms are most important for regulating arterial pressure on a short-term basis; __________ mechanisms are most important for regulating arterial pressure on a long-term basis.

Answer 17

baroreceptor / hormonal

Question 18

All of the following is true about blood pressure regulation

Answer 18

blood pressure depends on cardiac output and peripheral vascular resistance

increase of blood volume will lead to increase of blood pressure

increase of venous return will increase blood pressure

Question 19

Decrease of hydrostatic pressure in the capillary will ______________________________Net Filtration Rate .

Answer 19

decrease

Question 20

Which of these mechanisms results in increased blood pressure?

Answer 20

increased production of renin

Question 21

Which of these mechanisms results in increased blood pressure?

Answer 21

increased production of renin

Question 22

Blood vessel diameter increases (vasodilation) , peripheral vascular resistance ______________________

Answer 22

decreases

Question 23

The walls of most blood vessels are innervated by

Answer 23

unmyelinated sympathetic neurons

Question 24

Which is the most significant factor affecting peripheral vascular resistance?

Answer 24

blood vessels diameter

Question 25

A single molecule of hemoglobin can transport up to ___ molecules of oxygen

Answer 25

4

Question 26

An increase in plasma levels of erythropoietin will cause blood viscosity to__________________________________________________________________________________________

Answer 26

increase

Question 27

Renin production increases when blood flow to the kidney_________________________

Answer 27

decrease