00:01
Alright, so starting with the first problem, it looks like it's called problem 29.
00:05
If the mitral valve or the bicuspid valve is insufficient, a murmur would be heard during the ventricular systole.
00:18
This is when the left ventricle contracts in order to pump blood into the aorta, and so due to the inadequate closure of the mitral valve, some blood would regurgitate back into the left atrium, which can cause the characteristic sound of the murmur.
00:32
For 30, blood flows through the heart due to pressure changes, that coincide with alternating myocardial contraction and relaxation, and so these changes will lead to valve openings, ensuring forward blood flow.
00:55
Doesn't look like there's actually a question there, so we'll move on to 31, which asks when, at what point during the heartbeat is ventricular pressure going to be the highest, and when is it going to be the lowest? and so the ventricular pressure is going to be highest during, once again, ventricular systole, which is specifically during the phase of ejection, when the ventricles contract to push the blood into the pulmonary artery and aorta...