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Structural of a myofibril and contraction unit
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Dr Praveen Kumar Agrawal is teaching live on Unacademy Plus

Dr Praveen Kumar Agrawal
Top Ex - Faculty, Allen Kota Ph.D., NET, JRF, SRF, GATE. 21 Yrs Pre Medical Experience. Known for best explanation Youtuber with 3 M views.

U
Unacademy user
you are wrong bro .... in concurrent list executive power lies with state unless a law specifically confers it on centre
Q) anatomical unit of muscle fiber is a) Muscle fiber b) sacromere c) myofibril d) sarcoplasm
Akhil Yadav
5 months ago
myofibril, i guess.
sir thnkxx myofibril and myofiber m bhut confused rhta tha m aaj sb crystal clear ho gya😊😊😊
thanks
sir is there any difference between myofibre and fibril?
ultimate sir. thank u. ye pahle kbhi samajh nhi aaya. aaj clear ho gya
  1. Course: Locomotion and Movement -2 Lesson -B Structure of a Myofibril and Sarcomere DR. P. K. AGRAWAL M.Sc, PH.D., CSIR NET (JRF), SRF, GATE, FIAZ 20 Years of Pre-medical teaching experience Ex Faculty, Allen Career Institute, Kota Watch my Live Classes on Unacademy Plus


  2. STRUCTURE OF A MYOFIBRIL Each myocyte internally contains many long cylindrical structures, called myofibrils, which are the basic structural units of skeletal muscles. .Myofibril forms the functional unit of the muscle. Each myofibril contains about soo myosin filaments and 3o0o acti filaments (a.a) These filaments are large polymerized molecules, which are responsible for bringing about the contraction process. Myosin filaments are thick and dark coloured filaments but actin filaments are the thin and light coloured. Both these types of filaments are partially interdigitated and thus myofibrils have alternate light and dark bands.


  3. Structure of myofibril and banding pattern 2 Line H zone Band M Line A Sarco mure enta


  4. Molecular structure of a part of myofibril (enlarged) A band M line I Band Z line Relaxed fibre Myosin Actin Sarcomere


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