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  • Intercalated discs are the features of____ and they help in_____Option: 1 Cardiac muscles; maintaining structure  <div c

Intercalated discs are the features of____ and they help in_____

Option: 1

Cardiac muscles; maintaining structure

 


Option: 2

Cardiac muscles; transmission of impulse

 


Option: 3

Cardiac muscles; excretion

 


Option: 4

Cardiac muscles; respiration


Answers (1)

best_answer
 

Cardiac Muscles -

Location- 

  • These muscles are present in the walls of the heart and in the large veins like pulmonary veins and superior vena cava.

    
Structure- 

  • These show characters of both striped and unstriped muscles.
  • Each muscle fibre is a long and cylindrical structure having a definite sarcolemma. 
  • Fibres contain a single nucleus in the centre.
  • Fibres possess certain lateral branches that form a contractile network. 
  • These lateral branches are called oblique bridges.
  • Cardiac muscles have intercalated discs. 
  • Intercalated discs function as boosters of contractions wave and permit the wave of muscle contraction to be transmitted from one cardiac fibre to another.

Intercalated discs are the features of cardiac muscles. They have gap junctions that promote diffusion of ions between cells and allow waves of depolarization to spread over the entire heart by passing from cell to cell.

Posted by

Devendra Khairwa

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