BIO220 Topic 3 Graded Quiz

10 Jun BIO220 Topic 3 Graded Quiz

Question
Question 1

2.50 points out of 2.50

Question text

When blood pressure is greater than the blood colloid osmotic pressure, there is

Select one:

a. a net movement of fluid into the capillary.

b. a net movement of fluid out of the capillary.

c. less lymph formed.

d. a decrease in the volume of the interstitial fluid.

e. a decreased likelihood of edema.

Question 2

2.50 points out of 2.50

Question text

Precapillary sphincters

Select one:

a. serve as valves in veins.

b. are found in the tunica media.

c. carry blood under high pressure.

d. control the blood flow into capillary beds.

e. are voluntary structures.

Question 3

2.50 points out of 2.50

Question text

The structure of a capillary wall differs from that of a vein or artery because

Select one:

a. the capillary wall has only two tunics.

b. capillaries have more smooth muscle.

c. capillary walls have only endothelium and a basement membrane.

d. capillaries can constrict or dilate.

e. capillaries are impermeable to all substances.

Question 4

2.50 points out of 2.50

Question text

Baron von Quacko, famous tag-team wrestler, has a famous “sleeper hold” that he uses on his opponents. Using only a single digit on each hand, he presses on his opponent’s neck until his opponent passes out. What are the structures on which he is pressing and what is the effect?

Select one:

a. subclavian arteries; blood flow to brain is stopped

b. carotid chemoreceptors; blood pressure increases

c. baroreceptors in carotid sinus; peripheral vasodilation and decreased heart rate

d. vertebral arteries; blood flow to brain is increased

e. jugular vein; blood flow back to heart is decreased

Question 5

2.50 points out of 2.50

Question text

Which of the following hormones does NOT influence blood pressure?

Select one:

a. ADH

b. epinephrine

c. atrial natriuretic hormone

d. aldosterone

e. growth hormone

Question 6

2.50 points out of 2.50

Question text

Which of the following arteries is not part of the cerebral arterial circle (circle of Willis)?

Select one:

a. anterior communicating artery

b. posterior cerebellar artery

c. posterior communicating artery

d. anterior cerebral artery

e. internal carotid artery

Question 7

2.50 points out of 2.50

Question text

Which of the following is LESS likely to result in edema?

Select one:

a. increase in capillary permeability

b. reduced plasma colloid osmotic pressure

c. blockage of veins

d. increased mean arterial pressure

e. loss of protein molecules in urine through the kidneys

Question 8

2.50 points out of 2.50

Question text

In the aorta,

Select one:

a. the blood pressure and blood velocity are both high.

b. the velocity of blood flow is high, but blood pressure is low.

c. the resistance to blood flow is high, but velocity of blood flow is low.

d. the resistance to blood flow and the blood pressure are both low.

e. velocity is diminished because the total cross-sectional area is small.

Question 9

2.50 points out of 2.50

Question text

In the pulmonary circulation, the _____ carry blood to the lungs.

Select one:

a. carotid sinuses

b. pulmonary arteries

c. coronary arteries

d. superior vena cava and inferior vena cava

e. aorta

Question 10

2.50 points out of 2.50

Question text

The figure illustrates the capillary network. What does “C” represent?

Select one:

a. precapillary sphincter

b. metarteriole

c. thoroughfare channel

d. arterial capillaries

e. venous capillaries

Question 11

2.50 points out of 2.50

Question text

Which coat of an artery contains endothelium?

Select one:

a. tunica intima

b. tunica media

c. tunica adventitia

d. tunica elastica

e. tunica intermedia

Question 12

2.50 points out of 2.50

Question text

Which of the following enhances the exchange between capillary walls and the interstitial spaces?

Select one:

a. the thinness of the capillary wall

b. minimal branching in the capillary bed

c. increased blood velocity through the capillaries

d. the high pressure in the interstitial spaces

e. the stratification of the capillary wall

Question 13

2.50 points out of 2.50

Question text

Which of the following acts as a storage area for blood?

Select one:

a. the aorta

b. the veins

c. capillaries

d. arterioles

e. the arteries

Question 14

2.50 points out of 2.50

Question text

What creates the pulse?

Select one:

a. the diastole of the ventricles

b. ejection of blood from the left ventricle into the aorta

c. the compliance of the arteries

d. constriction of the arterioles

Question 15

2.50 points out of 2.50

Question text

Which of the following statements about laminar blood flow is true?

Select one:

a. The innermost layer of blood moves at the lowest velocity.

b. Laminar blood flow occurs when blood flows past an area of constriction.

c. The outermost layer of blood experiences the greatest resistance to flow.

d. In laminar blood flow, the rapid rate of blood flow exceeds critical velocity.

e. It makes lots of different noises.

Question 16

2.50 points out of 2.50

Question text

The diagram illustrates a part of a capillary. What does “B” represent?

Select one:

a. basement membrane

b. RBC

c. capillary endothelial cell

d. nucleus of endothelial cell

e. precapillary cell

Question 17

2.50 points out of 2.50

Question text

Which of the following thoracic organs is supplied by a parietal branch of the thoracic aorta?

Select one:

a. the heart

b. the lungs

c. the esophagus

d. the intercostal muscles

e. the thymus gland

Question 18

2.50 points out of 2.50

Question text

On this diagram label pulse point “A”.

Select one:

a. femoral artery

b. radial artery

c. common carotid artery

d. popliteal artery

e. brachial artery

Question 19

2.50 points out of 2.50

Question text

Hormones from the adrenal medulla

Select one:

a. are released in response to parasympathetic stimulation.

b. cause vasodilation in blood vessels of the skin.

c. decrease the heart rate.

d. cause an increase in stroke volume.

e. are released in response to vagal stimulation.

Question 20

2.50 points out of 2.50

Question text

A direct connection between an arteriole and a venule without an intervening capillary bed is a(an)

Select one:

a. venous sinus.

b. arteriovenous anastomosis.

c. metarteriole.