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Sliding Filament Theory
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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.

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shimla conference was held in 1945 under the viceroy of Lord Wavel.
sir myosin filament ka length kese same rahega wo toh contract ho raha he na
Hannan Pirzada
5 months ago
It's becox the actin filament had to slide over myosin filament.Which in turn will keep the length of myosin filament same. During muscle contraction: Length of Sarcomere decreases and I Band (Actin) decreases(By 20%).
Hannan Pirzada
5 months ago
It's becox the actin filament had to slide over myosin filament.Which in turn will keep the length of myosin filament same. During muscle contraction: Length of Sarcomere decreases and I Band (Actin) decreases(By 20%).
Hannan Pirzada
5 months ago
(actin filament has******)
sir plus course ke liye payment kase hogi. and, how can I join plus course
sir plus course ke liye payment kase hogi. and, how can I join plus course
very clear explanation thanks a lot sir 🙏🙏🙏🙏🙏🙏👍🙏👍👍👍👍👍👍👍
thanks sir for your easy way of reaching to this hard concept. make easy for us to understands best. thanks once again to you.
  1. Course: Locomotion and Movement -2 Lasson -9:Mechanism of contraction (Sliding flament Theary) 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. Mechanism of muscle contraction (Sliding filament theory) .To explain the mechanism of muscular contraction, "Sliding filament theory" was proposed . This is the best acceptable theory for explaining muscular contraction. It is also called 'Walk- . According to this theory, interaction between actin and myosin is the basic cause of muscular Actin filaments are interdigitated with myosin filaments (like the crossing of fingers of two .The head of the myosin is joined to the myosin backbone, by a cross bridge, forming a hinge by H.E. Huxley and A. F. Huxley (1957). along theory' or 'Ratchet theory'. contraction hands). joint. From this joint, the head can tilt in forward and backward directions. Is movement requires the use of ATP, so it is an active process. During contraction actin filaments slide over the myosin filaments. (Remember no filament is elastic or stretchable).


  3. Covered active site Myosin heads (With ATPase activity) Myosin Actin rawa Active site of actin covered with TT complex (During relaxing mode)


  4. Uncovered active site Acto-myosin complex Dr. P. K. Agrawal De-activation ofTT complex and Myosin head attachment with the Actin active sites


  5. Tilted head Dr. P.K. Agrawa ATP breakage in Heads and power stroke


  6. Active site of actin Actin rawa Dr. P. K. Agrawal actin filament sliding Myosin filament fixed


  7. Quick revision . Sarcomere - Shortens . H zone - Disappears . I band - Shortens . A band - As such . Successive Z lines -Come close to each other Maximum contraction- Opposite actin filaments meet at M line Length of Actin filaments -Same . Length of Myosin filaments- Same


  8. Request! Regularly watch lessons. Please like, comment and recommend this lesson Watch my LIVE classes in Unacademy PLUS .Register for Rs. 1 only on Sunday. ALL THE BEST