Circulatory System

Question 1

What heartwall layer i s mostly closely associated with pericardium?

Answer 1

Epicardium

Question 2

Iies close to the endothelium, contain actin and myosin and has contractile ability?

Answer 2

Pericyte

Question 3

What type of blood vessel has a thin wall compared to its lumen?

Answer 3

Vein

Question 4

What is the membrane closely associated with tunica intima?

Answer 4

External elastic membrane?

Question 5

What do capillaries lack that arteries and veins posses in their walls?

Answer 5

Smooth muscle

Question 6

What structure is located in the right atrium?

Answer 6

SA node

Question 7

What is the inner most layer of the blood vessel?

Answer 7

Tunica intima

Question 8

The release of what substance during clot formation stimulates smooth muscle in arteries and contract?

Answer 8

Thromboxane A2

Question 9

A sinusoid is a type of what structure?

Answer 9

Capillary

Question 10

What is the name for the small blood vessels in the walls of blood vessels?

Answer 10

Vasa vasorum

Question 11

What type of tissue comprises anull fibrost?

Answer 11

Connective tissue

Question 12

What type of blood vessel has a thick wall compared to the lumen?

Answer 12

Artery

Question 13

What membrane is associated with tunica intima?

Answer 13

Internal elastic membrane

Question 14

Sinusoidal capillaries are son in the spleen, liver, in what specific part of what other organ?

Answer 14

Adenohypophysis

Question 15

What layer of the heart contains endothelium?

Answer 15

Endocardium

Question 16

What type of fiber is observed in abundance among the smooth muscle fibers of the tunica media of the aorta?

Answer 16

Elastic fibers

Question 17

What layer of the wall of a large vein is the most prominent?

Answer 17

Tunica adventitia

Question 18

What glycoprotein factor is part of the clotting mechanism?

Answer 18

Von wilberbrand factor

Question 19

What type of blood vessel is found in endocrine glands and tissues where absorption is occuring

Answer 19

Fenestrated capillaries

Question 20

Contains fenestrated capillaries

Answer 20

Glomerulus

Question 21

What BV is heavily invested with elastic fibers?

Answer 21

Aorta

Question 22

What type of capillary is simple an epithelial tube with no basal lamina?

Answer 22

Lymphatic

Question 23

What layer of the heart wall contains the most cardiac muscle

Answer 23

Myocardium

Question 24

What type of cell lines the external surface of the heart?

Answer 24

Mesothelial

Question 25

In general in large vessels where are the vasa vasora located?

Answer 25

Tunica adventitia

Question 26

What layer of the artery wall is thethickest?

Answer 26

Tunica media

Question 27

What chemical is release from nerve fiber that cause arterial constriction?

Answer 27

Norepinephrine

Question 28

What do veins have that arteries dont

Answer 28

Valve

Question 29

What is the DCT that comprises the skeleton of the heart?

Answer 29

Annuli fibrosis

Question 30

Prominent inner and outer elastic membrane are criteria for what type of vessel?

Answer 30

Mascular artery

Question 31

What is the pace maker of the heart?

Answer 31

SA node

Question 32

What BV control blood flow into capillary?

Answer 32

Arteriole

Question 33

What major BV has a poorly developed tunica media and thick tunica adventitia rich in elastic fiber?

Answer 33

Vena cava

Question 34

What type of artery is the aorta?

Answer 34

Elastic artery

Question 35

Lines the natural free surfaces of BV and the interior of the heart?

Answer 35

Endothelial