Properties of arteries Aorta Comes off the heart Sustains high blood pressures Elastic but rigid wa‖l Arteries ° Lower blood pressures Often have muscular wall and can contract
Properties of arteries ➢ Aorta ⚫ Comes off the heart ⚫ Sustains high blood pressures ⚫ Elastic but rigid wall ➢ Arteries ⚫ Lower blood pressures ⚫ Often have muscular wall and can contract
Structure of artery Connective r Smooth muscle tissue tissue ARTERY Endothelial tissue akenfromwww.sirinet.net/igjohnso/circulationhtml
Structure of artery Taken from www.sirinet.net/~jgjohnso/ circulation.html
Properties of veins y Thin wall Some have valves to prevent back-flow of blood Weak ability to contract even if there are muscle fibers in the wall Dependant on" pumping action of surrounding muscles-particularly of the limbs
Properties of veins ➢ Thin wall ➢ Some have valves to prevent back-flow of blood ➢ Weak ability to contract even if there are muscle fibers in the wall. ➢ Dependant on “pumping action of surrounding muscles – particularly of the limbs
Structure of vein Capillary Epithelial tissue Epithelial Valve tissue Epithelial tissue Smooth muscle Smooth muscle Connective Connective tissue tissue Arteriole Artery Vein Takenfromwww.sirinet.net/-jgjohnso/circulationhtml
Structure of vein Taken from www.sirinet.net/~jgjohnso/ circulation.html
Properties of capillary bed Very thin wall often only one cell-thick and can change to allow blood to pass through into the interstitial space
Properties of capillary bed ➢ Very thin wall often only one cell-thick and can change to allow blood to pass through into the interstitial space