Ms. F. visited her physician for a routine physical. During the exam, she explained that over the last two weeks, she had been feeling much more tired than normal and occasionally felt short of breath. Knowing that women usually present with atypical symptoms of a heart attack, her physician ran some diagnostic tests and found that Ms. F. was indeed having a heart attack.

a. Imaging showed that Ms. F. had blockages in both her right marginal artery and her anterior interventricular artery. What parts of her heart would be affected by these blockages? How would the body be affected by this?

b. Ms. F.'s heart attack damaged one of her papillary muscles. What is the normal function of a papillary muscle? Predict the consequences of a malfunctioning papillary muscle.

Answer is given below.

Explanation:

A. These blockages would affect the anterior right and left ventricles (the anterior interventricular artery) and the lateral part of the right atrium and right ventricle (the marginal artery)..

B. The papillary muscles pull the chordae tendineae taut during ventricular contraction, which prevents prolapse of the atrioventricular valves into the atria. Dysfunction of a papillary muscle would prevent some of the chordae from functioning properly, which could lead to valvular prolapse.

a. Left ventricle. There would be decreased blood to the various organs

b. Papillary muscle function to allow closing of the bicuspid and tricuspid values during systole. malfunctioning papillary muscle, could cause back flow of blood leading to decreased cardiac output

Explanation:

answer; ///stratum basale///stratum spinosumstratum granulosumstratum lucidumstratum corneum; 2,1,5,4,3