Which one of the following is the structure of a cardiac muscle cell ?

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Q: (CDS-I/2021)

Which one of the following is the structure of a cardiac muscle cell ?

question_subject: 

Science

question_exam: 

CDS-I

stats: 

0,20,30,14,5,11,20

keywords: 

{'cardiac muscle cell': [0, 0, 0, 1], 'structure': [7, 0, 5, 8], 'unbranched': [0, 0, 0, 1], 'cylindrical': [0, 0, 0, 2], 'branched': [0, 0, 0, 1], 'uninucleate': [0, 0, 0, 1]}

The correct answer is option 4: Cylindrical, Branched and Uninucleate.

A cardiac muscle cell, also known as a cardiomyocyte, has a cylindrical shape, meaning it is long and tube-like. It is also branched, with multiple branches extending from the main body of the cell. This branching allows for interconnections between adjacent cells, forming a network that enables efficient contraction and coordination of the heart muscle.

In terms of the number of nuclei, a cardiac muscle cell is uninucleate, meaning it possesses only one nucleus. This is in contrast to skeletal muscle cells, which are multinucleate, meaning they have multiple nuclei.

Option 1 is incorrect because while a cardiac muscle cell is cylindrical, it is actually branched and uninucleate, not multinucleate.

Option 2 is incorrect because a cardiac muscle cell is not spinal-shaped, and it is not uninucleate, but rather uninucleate.

Option 3 is incorrect because a cardiac muscle cell is not spinal-shaped, but rather cylindrical.

Therefore, the correct answer is option 4: Cylindrical, Branched and Uninucleate.