Anatomy of the heart ATAR HB 2015

arteriesCarry blood AWAY from the heart
veinsReturn blood BACK to the heart
ventriclesLOWER chambers of the heart.

vena cavaVeins to the right atrium.
semi lunar valvesValves between the ventricles and pulmonary artery or aorta (generic term)
pulmonary arteryBlood vessel from the right ventricle to the lungs.
Carries deoxygenated blood.
pulmonary veinsBlood vessel from the lungs to the left atrium.
Carries oxygenated blood.
bicuspid valveValve that stops blood back flow between left ventricle and left atrium.
Left AtriumChamber of the heart.
Receives blood from the lungs via the pulmonary vein.
Left VentricleChamber of the heart that receives blood from the left atrium.
Pumps blood blood into the aorta
Right AtriumBlood flows into this chamber via the vena cava.
Right VentricleChamber that receives blood from the right atria.
Pumps blood to the lungs via the pulmonary artery
tricuspid valveValve between the right atrium & right ventricle. Closes to prevent back flow of blood back into the atrium.
valvesGeneral term for flap of tissue that prevents blood from flowing backwards.
aortaLargest artery in the body.
Carries blood from the left ventricle to the rest of the body through the systemic pathway.
diastolic pressurePressure in the arterial system when the heart RELAXES and fills with blood.
systolic pressurePressure in the arterial system when heart CONTRACTS and blood is pushed out of heart.
cardiac outputTotal volume of blood expelled in one minute.
Formula CO=HR x SV
heart rateNumber of heart beats per minute
arteriolea small branch of and artery leading into capillaries
papillary muscleCone-like muscles on the ventricular walls, to which the chordae tendineae are attached. Prevents the valve flaps of the AV valves from turning inside out into the atria.
chordae tendinaeChords that prevent the valves from swinging back open in the chambers of the heart.
coronary arteryArtery that supply blood to the heart muscle.
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