Contains elastic fibres and collagen fibres to provide strength and durability.
-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.
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
Diagram of the artery compared to vein
Pressure is low as veins carry blood back to the heart
Valves to prevent back flow and prevent blood flowing in the opposite direction. Large lumen to intake lots of blood
Thinner layers of smooth muscle and elastic fibres as they dont need to stretch and recoil and are not actively consticted to reduce blood flow
mostly collagen fibres
Veins compared to the artery