Week 3: Module 1 Pt. 3

Question 1

What are the 3 main layers of arteries?

Answer 1

1. Tunica Externa: Contains collagen and elastic fibres.
2. Tunica Media: Mostly smooth muscle but has some collagen and elastic fibres.
3. Tunica Interna: Has epithelial tissue for liminal flow.

Question 2

What are the 3 main types of arteries?

Answer 2

1. Conducting arteries: Elastic arteries expand to lessen fluctuations during diastole and systole.
2. Distributing arteries: Muscular arteries control flow via vasoconstriction/vasodilation.
3. Resistance vessels: Controls blood flow via peripheral resistance.