Tunica externa
Contains elastic fibres and collagen fibres to provide strength and durability.
Tunica Media
-Contains smooth muscle that contract and constrict the artery which makes the lumen narrower.
-Contains elastic fibres which allow the artery to expand and recoil as there is a high pressure of blood there are very thick walls.
Tunica intima
collagen fibres, smooth muscle, inner endothelium (flat cells of squamous epithelium and elastic tissue which allows expansion and recoil without bursting or rupture.
Lumen - gap is small to keep the high pressure of blood
Comments
Report
Report