Question

question 28
___ collected throughout the body drain(s) into the blood through two ducts in the neck.
○ lymphocytes
○ lymph
○ monocytes
○ stem cells

question 29
what is coronary artery disease most commonly caused by?
○ atherosclerosis
○ infarction
○ edema
○ congestive heart failure

question 30
coronary thrombosis may be a cause of:
○ mitral valve insufficiency
○ pulmonary valve atresia
○ aortic valvular stenosis
○ myocardial infarction

Explanation:

• For Question 28: Lymph is a fluid that is collected throughout the body and drains into the blood through two ducts in the neck. Lymphocytes are a type of white - blood cell, monocytes are also white - blood cells, and stem cells are undifferentiated cells.
• For Question 29: Atherosclerosis, the buildup of plaque in the arteries, is the most common cause of coronary artery disease. Infarction is a result of blocked blood supply, edema is fluid accumulation, and congestive heart failure is a condition where the heart can't pump blood effectively.
• For Question 30: Coronary thrombosis, the formation of a blood clot in a coronary artery, can lead to a myocardial infarction (heart attack) due to blocked blood supply to the heart muscle. Mitral valve insufficiency is a problem with the mitral valve, pulmonary valve atresia is a defect in the pulmonary valve, and aortic valve stenosis is a narrowing of the aortic valve.

Answer:

Question 28: B. lymph
Question 29: A. atherosclerosis
Question 30: D. myocardial infarction