CV 2 coronary circulation

Question 1

what are the different blood vessels called?

Answer 1

arteries veins capillaries

Question 2

how many layers are in the structure of the artery & veins walls

Answer 2

three distinct layers

Question 3

name the different layers in the walls

Answer 3

tunica interna/intima
tunica media
tunic extrena/ adventitia

Question 4

what is the tunica interna/intima

Answer 4

inner endothelial lining plus connective tissue with variable number of elastic fibres

Question 5

what is the tunica media

Answer 5

SMC plus loose connective tissue and external elastic membrane

Question 6

what is tunica externa/ adventitia

Answer 6

outer connective tissue sheath

Question 7

what percentage of overall blood does the heart use to meet own metabolic demands?

Answer 7

5%

Question 8

what percentage of oxygen is used for metabolic demands

Answer 8

60-70%

Question 9

what does the coronary circulation do?

Answer 9

supply oxygen and nutrients to the heart muscle