WEEK 7 Flashcards
What is Atrial Depolarisation?
movement of action potential through atria
What is Ventricle Depolarisation?
movement of action potential through ventricle
What is
Venticle Repolarisation?
recharging of ventricles after action potential
What is the function of the coronary vein?
The coronary veins return deoxygenated blood from the myocardium back to the right atrium.
Function of triscuspid valve
The tricuspid valve helps keep blood flowing in the right direction through the heart.
Function of Bicuspid valve
prevents the blood from flowing back from the aorta into the heart when the pumping chamber relaxes
function of Pulmonary semilunar valve
allow blood to be pumped forward into the arteries, but prevent backflow of blood from the arteries into the ventricles.
function of Aortic semilunar valve
When the ventricles contract, atrioventricular valves close to prevent blood from flowing back into the atria. When the ventricles relax, semilunar valves close to prevent blood from flowing back into the ventricles.
function of Chordae tendineae
the chordae tendineae make up the leaflet suspension system that ultimately determine and maintain the position and tension on the valve leaflets at end of systole.
function of Papillary muscle
The papillary muscles (PMs) play an important role in normal cardiac function, helping to prevent leakage through the AV valves during systole
What is that
Electrical Activity Mechanical Activity of a P-Wave?
Atrial depolarisation
Atrial systole
(contraction)
What is QRS complex
electrical activity?
mechanical activity?
Ventricle depolarisation
Ventricle systole
(contraction)
What is
T Wave
Electrical Activity and Mechanical activity?
Ventricle repolarisation
Start of ventricle
diastole (relaxation)
What is cardiac output?
Volume of blood ejected from the left (OR right ventricle) each min
What is stoke volume SV?
The volume of blood ejected from the left (or right) ventricle during each contraction (mL/beat)
