intrinsic factors on bp

injury or hemorhage cause loss of bld internallt or externally & lower bp

amount of blood

high hr = high bp

heart rate

varois hormones = vaso-contrictors of dilators, diameter inverse to bp

size of vessels

age = lower ability to expand & contract vessles = high bp

vessel elasticity

arteries narrowing or hardeninf incres. bp, artwries have less stretch & decreased flow

resistance

bo drops as blod flows firther from heart & as it passes into smaller vessles

distance from heart

thick blood = high bp

viscosity