Question

Rose, a family friend, recently passed away following a lifelong struggle with heart issues. She had a congenital valve defect that led to mitral valve prolapse (MVP), in which the valve leaks blood into the atrium. Which statements are true about normal valve function in the cardiovascular?

A. valves are necessary for one-way flow in the cardiovascular system
B. a prolapsed mitral valve will cause the ventricle to fail due to increased afterload
C. valves are made of smooth muscle and open in response to an electrical signal from the pacemakers
D. insufficiency of venous valves leads to decreased stroke volume

Answer 1

the correct answer is A

Step-by-step explanation:

The heart valves are in charge of preventing the blood flow from going against the current. This means that they do not make a journey in the opposite direction to which the heart is physiologically prepared, in congenital valve alterations where there is prolapse, the smooth valve muscle is inefficient, so in this way they do not act as gateways generating unidirectional flow, generating that the compartment before them in the cardiac circuit undergoes a greater final atrial filling. In addition, it is essential to clarify that ventricular heart failure can be sustained throughout the life of a patient with the necessary measures such as care with physical efforts or other indications, but the headphones do not, since when facing atrial problems the patient enters critical cardiac stages.