ANATOMY: Histology of CVS

Question 1

how many layers do you have in blood vessels ? name them and its contents and sub contents

Answer 1

3, Tunica Intima/Interna:
Endothelial lining:
Sub-endothelial layer: Loose CT rich in elastic fibers
Internal elastic lamina: Fenestrated membranous band of elastic fibers.
Tunica Media: Smooth muscle cells, collagen fibers and variable amount of elastic fibers; External elastic lamina.
Tunica adventitia: Connective tissue with small arteries (vasa vasorum).

Question 2

what are the different types of arteries and its content

Answer 2

3, muscular artery:Wall- numerous smooth muscle fibers
elastic artery: Wall rich in elastic CT
arterioles:Smallest branches of the arterial system. Wall consists of one to five layers of smooth muscle fibers in tunica media