Human Phys Exam 3

convection

a mass migration of flow

chamber and valve pump

portion of circulatory system with two one way valves

heart and veins

where are the the chamber and pump valves located in the body

absolute pressure

another name for atmospheric pressure

relative pressure

based off of the atmospheric pressure, what we measure blood pressure with

no-slip condition

a fluid in a tube in direct contact with a solid does not move

center, wall

due to the no-slip condition, blood moves fastest at the _____, and slowest at the ____

viscosity

how readily a liquid will change shape

about 2x more

how viscous is blood compared to water

hematocrit

percent of blood volume that is cellular

reduce viscosity and increase diameter of tube

two ways to reduce resistance to flow

16x

doubling the diameter of a tube changes the relative flow by how much?

travel pipes

what types of pipes should be wide

exchange pipes

what type of pipes should be narrow

maintain blood flow through capillary beds

main goal of circulatory system

volume

the heart directly affects, and maintains arterial ____

collagen fibers

keeps arteries from over enlarging or rupturing, good at resisting tension

elastin fibers

fibers that allow arteries to stretch, then recoil back

arterial pressure

the outward force that circulating blood exerts on inner arterial walls

constantly replace all the blood leaving arteries through capillaries

the job of the heart