Cardio Part II SUPP

Question 1

The muscular layer in the wall of a blood vessel

Answer 1

Media

Question 2

Compared to arteries, veins

Answer 2

have thinner walls

Question 3

Capillaries that have a complete lining are called

Answer 3

continuous capillaries.

Question 4

The layer between the tunica media and the tunica externa in a large artery is the

Answer 4

External Elastic membrane

Question 5

Which of the following layers of a vessel contains collagen fibers with scattered bands of
elastic fibers?

Answer 5

Tunica Externa

Question 6

After blood leaves the capillaries, it enters the

Answer 6

Venules

Question 7

Which layer of a blood vessel contains concentric sheets of smooth muscle tissue?

Answer 7

Tunica media

Question 8

In arteries, the thick layer of elastic fibers associated with the tunica intima is called the

Answer 8

Internal Elastic Membrane

Question 9

Which of the following is the innermost layer of a blood vessel?

Answer 9

tunica intima

Question 10

Venoconstriction ________ the amount of blood within the venous system, which ________
the volume in the arterial and capillary systems.

Answer 10

Reduces; Increases

Question 11

Venous valves are responsible for

Answer 11

Channeling blood toward the heart

Question 12

Which of the following vessels changes diameter most readily to local conditions or SNS stimulation?

Answer 12

Arterioles

Question 13

You find fenestrated arteries

Answer 13

Pituitary gland

Question 14

These vessels may be continuous or fenestrated.

Answer 14

Capillaries

Question 15

The force that moves fluid out of capillaries is ________ pressure whereas the opposing
force that moves fluid into capillaries is ________ pressure.

Answer 15

hydrostatic; colloid osmotic

Question 16

Which of the following is normally the greatest source acting on blood flow?

Answer 16

vascular resistance

Question 17

Some of the fluid that is forced out of capillaries is returned to the blood by the

Answer 17

lymphatic system.

Question 18

Blood colloid osmotic pressure is produced by

Answer 18

large non-diffusible proteins in the blood plasma.

Question 19

Calculate the net filtration pressure (NFP) with a blood hydrostatic pressure of 40 mm Hg
and a blood colloid osmotic pressure of 25 mm Hg. Then determine if filtration or reabsorption
occurs.
NFP = ________ and results in a fluid ________.

Answer 19

15 mm Hg; filtration

Question 20

Branches off the aortic arch include the

Answer 20

brachiocephalic trunk
left subclavian artery
left common carotid artery.

Question 21

Causes of Edema

Answer 21

the plasma concentration of protein is reduced
Capillary hydrostatic pressure is elevated
Capillary endothelium permeability goes up.

Question 22

Total peripheral resistance is affected primarily by

Answer 22

Blood vessel diameter

Question 23

Cross-sectional area is highest in

Answer 23

Capillaries

Question 24

opposes the flow of blood back to the heart?

Answer 24

Vascular resistance

Question 25

Baroreceptors are located in the

Answer 25

carotid and aortic sinuses and the right atrial wall.

Question 26

The vein that is formed from the fusion of the subclavian with the internal and external jugulars is the ________ vein.

Answer 26

BRACHIOCEPHALIC

Question 27

The brachiocephalic trunk delivers blood to

Answer 27

the right arm, head and neck.

Question 28

The tunica intima consists of

Answer 28

Simple squamous epithelium

Loose connective epithelium

Question 29

After the precapillary sphincter, blood enters a(n)

Answer 29

ThoroughFare Channel

Question 30

What is the difference between elastic arteries and muscular arteries?

Answer 30

Elastic arteries have elastic fibers throughout the tunica media whereas muscular arteries have few elastic fibers in the tunica media.

Question 31

Which of the following factors will increase the net filtration pressure to move fluid out of capillaries?

Answer 31

decreased plasma albumin and

increased blood hydrostatic pressure