GENERAL HISTOLOGY

MUSCLE

CARDIAC MUSCLE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Branching chains of cells. Must contract in unison.
A
skeletal muscle
B
cardiac muscle
C
visceral muscle
D
all muscles
Explanation: 

Detailed explanation-1: -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-2: -An intercalated disc allows the cardiac muscle cells to contract in a wave-like pattern so that the heart can work as a pump. Intercalated discs are part of the sarcolemma and contain two structures important in cardiac muscle contraction: gap junctions and desmosomes.

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