Lecture 5 - Structure of Blood Vessels I

Question 1

Layers of blood vessel?

Answer 1

tunica intima, tunica media, tunica adventitia

Question 2

Characteristic of elastin in Elastic artery TM?

Answer 2

fenestrated

Question 3

TI proportion in muscular arteries?

Answer 3

10% - increased in hypertension

Question 4

Components of TI?

Answer 4

endothelium, connective tissue (elastin), internal elastic lamina

Question 5

Components of TM?

Answer 5

collagen, elastin, smooth muscle, external elastic lamina (muscular arteries only)

Question 6

Components of TA?

Answer 6

collagen and elastin fibres, nerves, vasovasorum, lymphatics

Question 7

Histoloy of artherosclerosis

Answer 7

endothelial damage, intima thickening, S.M migrate to intima, macrophage accumulate lipid turning into foam cells

Question 8

Berry aneurysm common location?

Answer 8

a branching points, usually brain (Circle of Willis)

Question 9

Dissecting aneurysm common locations?

Answer 9

thoracic and abdominal aorta

Question 10

Dissecting aneurysm pathology?

Answer 10

bloo pooling in media, weakness of intima

Question 11

Risk factors of hypertension?

Answer 11

obesity, salt, smoking, stress

Question 12

Hypertension histology?

Answer 12

intima and media thickening, IEL duplication

Question 13

Unique histological characteristics of arterioles?

Answer 13

no EEL (less requirement from small flow volumes) and 2-3 SM layers in media