BIOL G220 Unit 4 Lecture Exam Review C

Match it! Select the correct answer from the pull down...Good luck!

the contraction of the heart produces pressure waves in the arteries, the peaks of which give _________ blood pressure

blood travels away from the heart in vessels called______, and towards the heart in vessels known as ___________

precapillary sphincters regulate blood flow to the capillaries by a process called

approximately ___ of the blood in the body is in the veins

as the blood in the veins is under ________ pressure, veins have numerous ______

muscular arteries have a thicker ____ ___ and fewer ____ fibers compared to elastic arteries

as arteries travel away from the heart their diameter ___, as veins get closer to the heart their diameter

in addition to arteries and veins, there is a third class of blood vessels, the ______