Question

1. a stethoscope is placed over the heart to listen to the:

○ electrical impulses
○ blood pressure
○ coronary thrombosis
○ pulmonary valve

1. sickle cell anemia includes the:

○ overproduction of platelets
○ overproduction of white blood cells
○ clumping of platelets vessels causing ischemia, infarction, and tissue necrosis
○ clumping of blood in vessels causing ischemia, infarction, and tissue necrosis

Explanation:

Question 62

A stethoscope is used to listen to heart sounds, including valve sounds. Electrical impulses are monitored by an ECG, blood pressure by a sphygmomanometer, and coronary thrombosis is a condition not directly listened to with a stethoscope. The pulmonary valve is part of the heart, and its sounds (like valve closure) can be heard with a stethoscope.

Sickle cell anemia involves abnormal hemoglobin (HbS) causing red blood cells to sickle. These sickled cells can clump in blood vessels, leading to ischemia, infarction, and tissue necrosis. Overproduction of platelets (thrombocytosis) or white blood cells (leukocytosis) is not part of sickle cell anemia. The option about platelet clumping is incorrect as sickle cell affects red blood cells, not platelets.

Answer:

D. pulmonary valve (assuming the options are labeled A - D as: A. electrical impulses, B. blood pressure, C. coronary thrombosis, D. pulmonary valve)

Question 63