Schwarzlose A&P 2 Exam 2 Chamberlain College Nursing - Questions with complete solution Schwarzlose A&P 2 Exam 2
Arteries
carry blood away from the heart. efferent.
Veins
carry blood back to the heart. Afferent
Capillaries
Microscopic vessels, connect the smallest arteries to ...
Schwarzlose A&P 2 Exam 2
Arteries
carry blood away from the heart. efferent.
Veins
carry blood back to the heart. Afferent
Capillaries
Microscopic vessels, connect the smallest arteries to the smallest veins
Vessel Wall: Tunica Intima
Inner most layer of a vessel
Vessel Wall: Tunica Media
Middle layer of a vessel. Muscle
vessel wall: Tunica Externa
Outer most layer of vessel Elastic Lamina
Layers on either side of the tunica media that give the vessels its elasticity.
vasa vasorum
small vessels that supply blood to superficial part of the larger vessels
Vasoconstriction
narrows the diameter of the blood vessels
vasodilation
increase in diameter of a blood vessel
elastic arteries
Largest arteries. closer to the heart; allow stretch as blood is pumped into them and recoil when ventricles relax
muscular arteries
distal to elastic arteries; deliver blood to body organs
Arterioles
smallest arteries. also called resistance arteries. 1-2layers of smooth muscle, and single layer of endothelium aneurysm
ballooning of a weakened portion of an arterial wall
continuous capillaries
most common type of capillary. has a wall where the endothelial cells fit very tightly together with intercellular clefts.
Intercellular clefts
allow passage of fluids and small solutes
fenestrated capillaries
have pores in vessel wall; found in kidneys, intestines, and endocrine glands. Leaky water hose
sinusoidal capillaries
found in the liver, bone marrow, and spleen. allows for larger passage of proteins like albumin
Collateral arteries
Capillary bed receives blood from more than one artery, an example of anastomosis
Metarterioles
Short vessels that link arterioles and capillaries. More capable of changing diameter
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