BIOL2150 Exam 3 Study Guide

cardiac output, peripheral resistance, blood volume

what are the 3 key variables that regulate blood pressure

cardiac output

volume of blood pumped by the heart per minute. calculated by multiplying that volume of blood pumped per beat (stroke volume) by the number of beats per minute (heart rate)

decrease

if cardiac output decreases, blood pressure will:

increase

if cardiac output increases, blood pressure will:

peripheral resistance

opposition to blood flow, determined by blood viscosity, blood vessel length, and blood vessel diameter

heart rate, blood vessel diameter

the cardiovascular center of the medulla oblongata regulates blood pressure by controlling ____________ and _________________

carotid sinus, aortic arch

baroreceptors monitor blood pressure in the ______________ and ________________

baroreceptors, chemoreceptors, higher brain centers

the cardiovascular center receives information about blood from:

baroreceptors

mechanoreceptors located in the carotid arteries, aortic arch, and elastic arteries of the neck and thorax that are sensitive to arterial pressure and stretch