Cardiac Muscle Structure & Function

Question 1

Describe the unique cellular properties of cardiac muscle.

Answer 1

Straited, multi nucleated, full of mitochondria, has intercalted disds

Question 2

Define the cross-bridge cycle.

Answer 2

Myosin binding actin

Question 3

Describe the mechanisms of altering cross-bridge cycling in cardiac muscle.

Answer 3

.

Question 4

Describe the length-tension relationship (Frank-starling) in cardiac muscle.

Answer 4

if we increase the volume of the left ventricle, you’re stretching muscles more.

Question 5

Identify sarcomeric changes associated with heart failure

Answer 5

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