How does cardiac muscle differ from both voluntary muscle and smooth muscle in its structure and its function?
Answers
Answer:
Structure : Cardiac muscles are branched and contains Intercalated discs as communication junctions and have Straetions.
Function : These muscles are not fatigued and contract & relax simultaneously. They contract as a single unit and are involuntary.
That's why they are different in structure and function from smooth muscle and voluntary muscle.
Answer:
striated muscle :
- they are cylindrical in shape .
- they have striations ( light and dark band ) alternative.
- they have more than one nuclei ( multinucleated ).
- most of these muscles are attached to the skeletal system.
- they are under the willpower of human ( voluntary muscles ).
- they have proteins which form the striations
smooth muscles :
- they are spindle shaped muscles.
- they do not have striations.
- a single nucleus is present in each cell ( uninucleated ).
- they are not under the willpower of human ( involuntary ).
- these muscles are found in the gut and the urinary bladder.
cardiac muscles :
- they are structurally similar to the striated muscles and functionally similar to the smooth muscles.
- they are branched muscles.
- these muscles are found in the heart . from the birth till death these muscles show rhythmic contractions and relaxations.
- they do not show fatique.
I think it will help you.