MICROANATOMY

ENDOCRINE ORGANS AND RESPIRATORY SYSTEM

ENDOCRINE ORGANS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which type of muscle is heart considered?
A
Skeletal muscle
B
Cardiac muscle
C
Smooth muscle
D
None of the above
Explanation: 

Detailed explanation-1: -[1] Cardiomyocytes are striated, uninucleate muscle cells found exclusively in the heart muscle.

Detailed explanation-2: -Cardiac muscle cells (cardiomyocytes) are striated, branched, contain many mitochondria, and are under involuntary control. Each myocyte contains a single, centrally located nucleus and is surrounded by a cell membrane known as the sarcolemma.

Detailed explanation-3: -Cardiac muscle tissue, or myocardium, is a specialized type of muscle tissue that forms the heart. This muscle tissue, which contracts and releases involuntarily, is responsible for keeping the heart pumping blood around the body.

Detailed explanation-4: -Skeletal and cardiac muscles are known as striated muscles, because the filaments of actin and myosin that power their contraction are organized into repeating arrays, called sarcomeres, that have a striated microscopic appearance.

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