INTRO TO CARDIOVASCULAR SYSTEM

Question 1

Where are elastjc fibres found

Answer 1

In larger artery walls

Question 2

What are the 3 functions of elastic fibers in large artery wall

Answer 2

Allow stretch and recoil of the artery wall, they lessen the effects when blood flows through them sfter ventrivular systole. They also lessen the pressure gradient

Question 3

Where are elastic laminas found

Answer 3

Artery, large arterioles.

Question 4

How are smooth muscles arranged in muscular artery

Answer 4

Circular orientation im tunica media
Longitudinal orientation in subendothelium

Question 5

Where are smooth muscles found

Answer 5

Muscular artery mainly

Question 6

What is the structure of arterioles

Answer 6

1 or 2 layers of smooth muscles

Question 7

What is the structure of met-arterioles

Answer 7

Discontinuous layer of smooth muscles

Question 8

What is a pre-capillary sphincter

Answer 8

A ring of smooth muscles aroundthe beginning of capillary

Question 9

What is the structure of capillary walls

Answer 9

Endothelium, basal lamina, pericytes that replace tunica media

Question 10

Explain the structure pf cavernous tissue

Answer 10

Venous spaces lined with endothelium. The lined spaces are separated by elastic and nerve fibers, smooth muscles