cardiovascular 1; review Flashcards
cardiac output stages
preload
afterload
arterial
rhythmic ejection of blood from left v to aorta
electrocardiogram
measures electrical activity of the heart
pacemaker for heart
sa node
pulse pressure higher than 40
myocaridal hypertrophy
tells how much o2 and co2 are in blood
chemoreceptors
resting state of heart
repolarixzation
systole
ventricular contraction
perfect is 120
repolarization
resting state of heart
EKG/ECG
electrocarfiogram
venules
small veins comes from the capillaries
arterioles
small branch of artery leading to capillary
diastole
relaxation of ventricles
perfect is 80
measures electrical activity of the heart
electrocardiogram
hypothalamus helps by
getting signals from baro and chemo to change hr from amount of h20 and 02
ventricular contraction
systole
baroreceptors
stretch receptors for blood vessels
afterload
force for ejection in ventricle
stretch receptors for blood vessels
baroreceptors
relaxation of ventricles
diastole
CO =
cardiac output
chemoreceptors
tells how much o2 and co2 are in blood
pulse pressure =
systole - diastole
perfect is 40
bp =
cardiac output x peripheral vascular resistance
PVR
peripheral vascular resistance
humoral mechanisms for bp regulation
ADH
renin (angiotensin 1 and 2)
aldosterone
vasopressin
if sa node isnt working
av will pick up slack
slower or irregular hb
sa node initiates __ for contraction
depolarization
cardiac output =
stroke volume x hr
cardiac output x peripheral vascular resistance =
bp
helps nodes with conduction
bundle of His
bundle branches
purkinje fibers
second pacemaker for heart
av node
gets signals from baro and chemo to change hr from amount of h20 and 02
hypothalamus
stroke volume x hr =
cardiac output
rhythmic ejection of blood from left v to aorta
arterial
depolarization
contraction
force for ejection in ventricle (stage)
afterload
venous return/atrial filling (after diastole)
preload
preload
venous return/atrial filling (after diastole)
is hardened by 02 in blood vessels, less flexible, heart has to pump harder
fat