APPLIED RADIOLOGICAL ANATOMY

ANATOMY

MUSCULOSKELETAL AND SOFT TISSUE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What are cardiac muscles?
A
Muscles that surround organs
B
Tissue that connects muscles to other muscles
C
Muscles found in your heart(involuntary muscles; make heart pump)
D
None of the above
Explanation: 

Detailed explanation-1: -Cardiac muscle, like skeletal muscle, is made up of sarcomeres that allow for contractility. However, unlike skeletal muscle, cardiac muscle is under involuntary control. The cardiac muscle is responsible for the contractility of the heart and, therefore, the pumping action.

Detailed explanation-2: -Cardiac muscle is an involuntary striated muscle tissue found only in the heart and is responsible for the ability of the heart to pump blood.

Detailed explanation-3: -Cardiac muscle (or myocardium) makes up the thick middle layer of the heart. It is one of three types of muscle in the body, along with skeletal and smooth muscle. The myocardium is surrounded by a thin outer layer called the epicardium (AKA visceral pericardium) and an inner endocardium.

Detailed explanation-4: -The cardiac muscle is made up of cells that are specialized for contraction and pumping. They contract in intervals to pump blood through the heart and into the rest of the body.

Detailed explanation-5: -Cardiac muscle cells are located in the walls of the heart, appear striped (striated), and are under involuntary control. Smooth muscle fibers are located in walls of hollow visceral organs (such as the liver, pancreas, and intestines), except the heart, appear spindle-shaped, and are also under involuntary control.

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