Blood Vessels Flashcards
Carries blood throughout the body to supply oxygen and nutrients to tissues
Systemic circuit
Carries blood to the lungs for gas exchange
Pulmonary circuit
Carries blood away from heart
Artery
Arteries branch to form
Arterioles
Are the site of exchange
Capillaries
Carries blood back to the heart
Venules and veins
The hollow space blood flows through
Lumen
Smaller lumen and thicker walls to withstand high pressure
Arteries and arterioles
Have thinner walls and larger lumen and it is exposed to lower pressure
Veins and venules
Blood vessel walls are made up of layers called
Tunics
3 layers of blood vessel walls from superficial to deep
Tunica externa
Tunica media
Tunica intima
Composed of endothelium and basement membrane
Tunica intima
Made up of mainly smooth muscles
Tunica media
Composed mainly of collagen and elastic fibers
Tunica externa
Are blood vessels that carry blood away from the heart
Arteries