Question 1

Venous return to the heart is aided by ________ and the ________.

Accepted Answer

the skeletal muscle pump,respiratory pump

Question 2

The highly branched contractile cells that regulate capillary permeability are called

Accepted Answer

A)   podocytes.
B)   vascular smooth muscle.
C)   endothelial cells.
D)   pericytes.
E)   epitheliocytes. D

Question 3

Differences between arterioles and metarterioles include the fact that arterioles

Accepted Answer

A)   have a continuous smooth muscle layer in their walls.
B)   allow blood to bypass capillary beds.
C)   have an endothelial lining.
D)   have a continuous smooth muscle layer in their walls and allow blood to bypass capillary beds.
E)   All of the answers are correct. A

Question 4

The integrating center for neural control of blood pressure resides in the

Accepted Answer

A)   cerebrum.
B)   cerebellum.
C)   medulla oblongata.
D)   pons variolli.
E)   hypothalamus.

Question 5

Capillary exchange involving movement through the cells is called ________ transport.

Accepted Answer

The answer of Capillary exchange involving movement through the cells...

Question 6

Place these organs in order of descending percentage of blood flow received at rest: bones and other connective,brain,digestive organs and liver,heart,kidneys,lungs,skeletal muscle,skin.

Accepted Answer

The answer of Place these organs in order of descending...

Question 7

Reactive hyperemia is

Accepted Answer

A)   lack of blood flow due to an allergic reaction.
B)   increased blood flow following a period of reduced blood flow.
C)   increased blood pressure after stress.
D)   reflex contraction of smooth muscle in response to stress.
E)   None of the answers are correct.

Question 8

Colloid osmotic pressure in plasma is fairly constant in a healthy person.How would protein starvation affect this pressure? How may a very high-protein diet affect this pressure? Suppose a person is suffering from an imbalance that causes an increase in colloid osmotic pressure from the typical
25 mm Hg to 30 mm Hg.Calculate the effect on net fluid flow across the capillary.What negative health consequences could result?

Accepted Answer

The answer of Colloid osmotic pressure in plasma is fairly...

Question 9

Venules are similar to capillaries: they have ________ epithelium and little ________.They are distinguished from capillaries by ________.

Accepted Answer

The answer of Venules are similar to capillaries: they have...

Question 10

Blood pressure is highest in the ________ and decreases continuously as blood flows through the circulatory system,due to ________.

Accepted Answer

The answer of Blood pressure is highest in the ________...

Question 11

Loss of pericytes around retinal capillaries is a hallmark of the disease ________.

Accepted Answer

The answer of Loss of pericytes around retinal capillaries is...

Question 12

Which of the following is occurring during systole?

Accepted Answer

A)   blood pressure increases
B)   pulse pressure decreases
C)   more stress is placed on arterial walls
D)   blood pressure increases and pulse pressure decreases
E)   blood pressure increases and more stress is placed on arterial walls

Question 13

The sympathetic nervous system will cause vasodilation in the arteries of many blood vessels,but vasoconstriction in the brain.Why does this occur?

Accepted Answer

The answer of The sympathetic nervous system will cause vasodilation...

Question 14

Because the suffix "itis" means ________,swelling of the lower extremities due to blockage of lymph flow is NOT called ________-itis; rather it is called ________.

Accepted Answer

The answer of Because the suffix "itis" means ________,swelling of...

Question 15

Nitroglycerine is a medication taken by people who experience chest pain known as angina.One of the major side effects of the medication is that the patient will notice a severe headache.What causes this side effect?

Accepted Answer

The answer of Nitroglycerine is a medication taken by people...

Question 16

What effect does a calcium channel blocker have on the heart,the blood pressure,and cardiac output? Why?

Accepted Answer

The answer of What effect does a calcium channel blocker...

Question 17

The elevated blood pressure that sometimes accompanies pregnancy is known as

Accepted Answer

A)   preeclampsia.
B)   vasovagal syncope.
C)   infarction.
D)   reactive hyperemia.
E)   orthostatic hypotension.

Question 18

Several blood-borne chemicals affect the lumen size of arterioles.Which are NOT paired correctly?

Accepted Answer

A)   kinins - vasodilation
B)   histamine - vasodilation
C)   serotonin - vasodilation
D)   sumatriptan - vasoconstriction
E)   epinephrine - vasoconstriction with alpha receptors

Question 19

When blood pressure receptors sense a loss of blood pressure,they ________ their firing rate.

Accepted Answer

A)   increase
B)   decrease

Question 20

List the factors that influence arteriolar resistance,and give an example of each.

Accepted Answer

The answer of List the factors that influence arteriolar resistance,and...

Exam 15: Blood Flow and the Control of Blood Pressure

Venous return to the heart is aided by and the .