You are listening to the heart through a stethoscope. When you hear the first heart sound, which of the following options correctly matches the structure to the pressure change that would be most responsible for producing that sound?

True or False: if false, choose the answer that best corrects the statement.

Ventricular filling is defined as the period that the atria are in systole.

Using a stethoscope, you listen to the heart of a patient in their early forties. You hear a clear 1st heart sound (lub), but the second heart sound is muffled and followed by a whooshing noise. What structure could be dysfunctional in this patient?

During which phase or phases of the cardiac cycle does the ventricular pressure change the least?

During which phase of the cardiac cycle do you hear the second heart sound?

During diastole, a chamber of the heart:

(a) Relaxes and fills with blood

(b) Contracts and pushes blood into an adjacent chamber

(c) Experiences a sharp increase in pressure

(d) Reaches a pressure of approximately 120 mm Hg

During the cardiac cycle, the amount of blood ejected from the left ventricle when the semilunar valve opens is the:

(a) Stroke volume (SV)

(b) End-diastolic volume (EDV)

(c) End-systolic volume (ESV)

(d) Cardiac output (CO)