CV

Question 1

What are the three divisions of the vascular system?

Answer 1

Pulmonary Arc - to and from heart via elastic (pulmonary) vessels

Systemic Arc - blood pumping via elastic and muscular arteries to tissues
Lymphatic

Question 2

arteries: large to small

Answer 2

aorta, muscular artery, arterioles, terminal vascular bed –> venules –> muscular veins (radial) –> elastic veins (jugular)

Question 3

lymphatics

Answer 3

affertent. lymph vessels –> lymph channels (ducts) –> elastic veins

Question 4

tunica intima is composed of

Answer 4

endothelium, asal lamina, subendothelial CT, smooth muscle

Question 5

tunica intima fibers are ____ to vessel

Answer 5

parallel

Question 6

tunica intima is vascular or avascular?

Answer 6

avascular

Question 7

internal elastic lamina

Answer 7

elastic layer outside tunica intima, separates it from tunica media. allows for nutrients to get to tunica media.

Question 8

tunica media is composed of

Answer 8

smooth muscle (in muscular vessels)and elastic muscle (in elastic vessels) + collagenous fibers.

Question 9

tunica media fibers are arranged _____ to long axis of vessel

Answer 9

concentric, perpendicular

Question 10

External Elastic Lamina

Answer 10

around the tunica media

Question 11

what are the blood vessels and nerves calle that supply the tunica media?

Answer 11

outer half: vasa vasorum and nervi vasorum

inner half: tunica interna?

Question 12

tunica adventitia runs ____ to long axis of vessel

Answer 12

parallel

Question 13

tunica adventitia is composed of

Answer 13

collagen and elastic connective tissue + vasa vasorum and nervi vasorum

Question 14

what is the one constant feature of all vascular components?

Answer 14

endothelium

Question 15

where are valves present? veins, lymph or arteries?

Answer 15

veins and lymph vessels

Question 16

what is the difference between elastic and muscular arteries?

Answer 16

elastic arteries conduct blood away from heart while muscular arteries distribute it

Question 17

in elastic vessels, the ____ layer is thick

Answer 17

tunica media. concentric, fenestrated elastic lamina

Question 18

in elastic veins, the ____ layer is thick

Answer 18

tunica adventitia

Question 19

what are the gap junctions that supply tunica intima and inner tunica media of elastic vessels?

Answer 19

myoendothelial junctions

Question 20

in muscular vessels, tunica media is mostly ____

Answer 20

smooth muscle

Question 21

muscular arteries have a thick ____ layer

Answer 21

tunica media