chapter 29 Flashcards
vascular system
closed transport system of the blood
heart pumps blood into
arteries which leave the heart
arterioles feed the
capillary bed in tissue
arteries
carry blood away from heart
elastic arteries
largest in the body
can stretch without injury to accommodate the surge of blood when the heart contracts
muscular arteries
carry blood away from the heart to specific organs and tissues
arterioles
regulating blood flow throughout body
metartiole
connects arterioles and capillaries
capillaries
one cell thick cell wall easy exchange between blood and tissue cells
microcirculation
the flow of blood from arteriole to venule
true capillaries
receive blood flowing out of metartioles
acts as a valve to regulate blood flow
veins
vessel that carries blood to the heart
walls of blood vessels have 3 coats
tunica intima
tucina media
tunica externa
tunica intima
slick surface to decrease friction of blood flow
tunica media
bulky middle coat (thickest)
controls blood pressure
tunica externa
supports and protects the vessel