Test Four Blood Vessels

Question 1

Describe venules

Answer 1

Endothelium, small amt o layers of smooth muscle, adventitia is thickest layer

Question 2

What are the three types of capillaries

Answer 2

Continuous, fenestrated and sinusoids

Question 3

Describe sinusoids capillaries

Answer 3

Openings in endothelium and basal lamina, larger in diameter, slow down blood, fenestrae present

Question 4

Describe epicardium

Answer 4

Serous covering made up of simple squamous epi, thin CT layer, see adipose

Question 5

Describe arteriole

Answer 5

Endothelium like continuous capillary, no subendothelial CT, no internal or external elastic lamina, small amount of smooth muscle, thin adventitial layer

Question 6

Where is vasa vasorum found

Answer 6

In big blood vessels in adventitial layer and outer media layer

Question 7

Describe elastic arteries

Answer 7

Thick tunica intima, internal elastic lamina, thick layer of smooth muscle 40 to 70 layers, no adventitia and no external elastic lamina

Question 8

Tunica media is made up of

Answer 8

Smooth muscle (many layers) and external elastic lamina (thinner)

Question 9

The subendothelial in the tunica intima of blood vessels contains

Answer 9

Loose CT for expansion

Question 10

Describe small veins

Answer 10

Intima contains endothelium and thin subdenothelial CT layer, media contains smooth muscle with reticular and elastic fibers, valves made up of tunica intima, adventitial layer present

Question 11

Tunica intima consists of

Answer 11

Endothelium, subendothelium and internal elastic lamina

Question 12

Describe continuous capillaries

Answer 12

Complete endothelium lining, basal lamina, lacks pores

Question 13

The inner most layer of the vessels is

Answer 13

Tunica intima

Question 14

What is in the tunica adventitia

Answer 14

Collagen fibers and elastic fibers , and vasa Vasorum

Question 15

Describe myocardium

Answer 15

Similar to tunica media, thickest part, cardiac muscle

Question 16

The internal elastic lamina of the tunic intima of blood vessels contains

Answer 16

Thick band of elastic

Question 17

Function of vasa vasorum

Answer 17

Allows for diffusion of O2 and nutrients since its so big and thick

Question 18

Describe large veins

Answer 18

Well developed tunica intima, thinner smooth muscle and CT, well developed adventitia, possibility to see cardiac muscle

Question 19

Describe endocardium

Answer 19

Similar to tunica intima, simple squamous, subendothelial CT,no elastic lamina

Question 20

What is the middle layer of the blood vessels called

Answer 20

Tunica media

Question 21

What is the epi of the tunica intima of blood vessels

Answer 21

Simple squamous that rests on basal lamina

Question 22

Describe muscular artery

Answer 22

Internal and external elastic lamina, endothelium with thick subendothelial CT, up to 40 layers of smooth muscle

Question 23

What are the three layers of the heart

Answer 23

Endocardium, myocardium and epicardium

Question 24

Describe fenestrated capillaries

Answer 24

Endothelium has openings, basal lamina is complete, move large molecules through

Question 25

What is the outer layer of blood vessels

Answer 25

Tunica adventitia