L6

Question 1

Answer 1

Question 2

What are the 3 layered walls of vlood vessels?

Answer 2

Tunica:

Intima
Media
Adventitia

Question 2

What are the 3 layered walls of vlood vessels?

Answer 2

Tunica:

Intima
Media
Adventitia

Question 3

What is the structure of Tunica Intima?

Answer 3

Endothelium
Sub endothelium
Internal Elastic Lamina

Question 4

Intima: Endothelium

Answer 4

Simple squamous epithelium lines the lumen of all vessels

Question 5

Intima: sub endothelium

Answer 5

pad of loose FCT for cushioning endothelium

Question 6

Intima: IEL Internal elastica lamina

Answer 6

condense sheet of elastic tissue, Well developed in artiers and less developed in veins

Question 7

Tunic Media structure

Answer 7

Smooth muscle
Elastin and collagen
thickness of media is proportional to vessel diameter and blood pressure

Question 8

Tunic Adventitia structure

Answer 8

Loose FCT high in collagen and variable in elastin

In larger vessels, Adventitia contains vasa vasorum

Lymphatics and autonomic nerves found

Question 9

What is the function of arterioles?

Answer 9

Resistance vessels of circulation: determins blood pressure

Question 10

What is the function of cappilaries?

Answer 10

site of echange between blood and tissues

Question 11

What are venules?

Answer 11

Start of drainage system

Question 12

Function of veins

Answer 12

Low pressure, large volume transport system
Unidirecitonal flow
capacitance vessels

Question 13

What are the 3 layers of veins? and what is the shape of them?

Answer 13

Intima, Media, Adventitia

irregular, flattened shape with large lumen and thin wall