anatomy of the cardiovascular system Flashcards
what is the function of the CV system
to deliever o2 and nutrients to cells all around the body and removed waste products eg CO2 to the lungs
what are the components of the CV system
blood
blood vessel
heart
what does the pulmonary vein do
carries oxygenated blood from the lungs to the heart
what does the aorta do
carries oxygenated blood from the heart to the body
what does the vena cava do
carries deoxygenated blood from the body to the heart
what does the pulmonary artery do
carries deoxygenated blood from the heart to the lungs
which side of the heart is oxygenated and which is deoxygenated
the right of deoxygenated and the left is oxygenated
what are the 4 valves
aortic valve
pulmonary valve
tricuspid valve
bicuspid valve
which are the atrio ventricular vales
tricuspid and bicuspid
which are the semi lunar valves
aortic and pulmonary
what is the chordae tendinae
prevents the bicuspid and tricuspid valves from turning inside out by anchoring the ventricle valves
describe the pressure between the vessels
at the arteries and arterioles there is high pressure while at the veins and venuoles have low pressure so there are valves in place so the blood doesn’t flow back on itself
what are the 5 blood vessels
arteries
arterioles
capillaries
veins
venuoles
describe the arteries/arterioles
.carries oxygenated blood (expect pulmonary artery)
.arteries carries blood away from the heart
.thick, muscular walls (smooth muscle) to withstand high pressure
.they also control blood flow by vasoconstriction (decrease in lumen size) and vasodilation( increase in lumen size)
describe the capillaries
.small blood vessel wall is only one cell thick
.important from diffusion of gas and nutrients
.found at organs and muscles that will provide energy
.slow speed of blood flow due to thin vessels to allow maximum diffusion for time
