Vasculature

Question 1

Capillaries and postcapillary venules are designed for _______ whereas other vessels are designed for _______

Answer 1

• exchange

- mass circulation of blood

Question 2

blood flow is slowest in the

Answer 2

capillaries and venules

Question 3

tunica intima comprises _______ and contains _______ and _______

Answer 3

• the inner layer of the vessel
• a layer of endothelial cells in intimate contact with the blood
• layer of elastic and loose collagenous tissues containing intimal cells

Question 4

the tunica media is _______ which may be comprised of _______, ________, or _______

Answer 4

a layer in the middle of the vessel

• multiple layers of elastic laminae
• smooth muscle cells
• collagen

Question 5

the tunica adventitia is _____ and is comprised of ______

Answer 5

• the outer supporting layer

- collagenous tissue

Question 6

the _______ supply oxygen and nutrients to the adventitia and outer part of the media

Answer 6

vasa vasorum

Question 7

the elastic layers of the arteries are crucial to

Answer 7

permit expansion of the vessels after systolic contraction of the heart (dampening the systolic BP)

Question 8

_______ permits the control of blood flow to the capillary beds

Answer 8

SM

Question 9

Elastic arteries: the intima has a thin layer of ______ and an underlying layer of _______ and contains _______ and _______ which have similar structural features to smooth muscles celsl.

Answer 9

• endothelial cells
• collagen/elastin-rich fibers
• fibroblasts
• myointimal cells

Question 10

the adventita of the _______ contains vasa vasorum

Answer 10

elastic arteries

Question 11

muscular artieries: 2 well-defined elastic layers: the inner elastic lamina between the _______ and _______ and the outer elastic lamina that defines the boundary between the _______ and _______

Answer 11

• intima
• media
• media
• adventitia

Question 12

the media of the muscular arteries is primarily comprised of

Answer 12

smooth muscle cells

Question 13

the adventitia of the muscular arteries is

Answer 13

comparatively thick and contains collagen and elastin

Question 14

smaller muscular arteries

Answer 14

lose the outer elastic lamuina but retain the inner so you’ll have the endothelial cell layer and a thin layer of collagenous material (with a large layer of smooth muscle)

Question 15

arteriole structure

Answer 15

inner lining of endothelial cells on a thin basement menbrane surrounded by 1-2 layer of SM cells and outer collagenous tissue

Question 16

capillary structure

Answer 16

1-2 endothelial cells surrounding the lumen, no muscular layer, surrounded by pericytes

Question 17

most of the molecular traffic between the vascular system and tissues occurs through the _______ through _______

Answer 17

• capillary endothelium

- diffusion

Question 18

in continuous caps, transfer can occur via ______ and in fenestrated through ______

Answer 18

• pinocytosis vesicles

- pores

Question 19

you can find fenestrated endothelium in

Answer 19

the glomerulus of the kidney