CARDIAC \ STRIPED \ INVOLUNTARY MUSCLE

Question 1

What is the location of this muscle ?

Answer 1

Present in the myocardium of the heart.

Question 2

What is the nature of it’s muscle fiber ?

Answer 2

They are cylindrical , branched , uninucleate and never undergo fatigue{longest refractory period}

Note :- Muscle fiber are interconnected by communication junction \ gap junction \ intercalated disc which act as booster to transmit the wave of contraction from one fiber to the next.

Question 3

What is the muscle toner ?

Answer 3

They sustain the partial contraction of muscle

In skeletal muscle the nuclei are peripheral .

Question 4

LEARN THE ULTRA STRUCTURE OF THE SKELETAL MUSCLE FROM THE NOTES.

Answer 4

OKAY :D

Question 5

What is the sliding filament theory ?

Answer 5

During the muscle contraction thin filament (actin) slide over the thick filament (myosin) towards the H zone (reduces) hence the length of the sarcomere reduces called contraction.

Question 6

What is sarcomere ?

Answer 6

Area between two Z line is called sarcomere.(contractile unit of muscle fiber)