Loading presentation...

Present Remotely

Send the link below via email or IM

Copy

Present to your audience

Start remote presentation

  • Invited audience members will follow you as you navigate and present
  • People invited to a presentation do not need a Prezi account
  • This link expires 10 minutes after you close the presentation
  • A maximum of 30 users can follow your presentation
  • Learn more about this feature in our knowledge base article

Do you really want to delete this prezi?

Neither you, nor the coeditors you shared it with will be able to recover it again.

DeleteCancel

Steps To The Skeletal Muscle Contraction ( Sliding Filament

No description
by

Alexis Wright

on 20 November 2013

Comments (0)

Please log in to add your comment.

Report abuse

Transcript of Steps To The Skeletal Muscle Contraction ( Sliding Filament

Step 4:
Calcium ions combine with Troponin, shifting troponin and exposing the myosin binding sites on the actin.
Step 7:
ACh is inactivated by Acetylcholinesterase, inhibiting the nerve impulse conduction across the sarcolemma.
Step 2:
Acetylecholine causes the impulse to spread across the surface of the sarcolemma.
Step 5:
ATP breaks down ADP + P. The released energy activates the myosin cross bridges and results in the sliding of thin actin myofilament past the thick myosin myofilaments.
Step 6:
The sliding of the Myofilaments draws the Z lines towards each other, the Sarcomere shortens, the muscle fibers contract and therefore muscle contracts.
Step 3:
The nerve impulse enters the T Tubules and Sarcoplasmic Reticulum, stimulating the release of calcium ions.
A nerve impulse travels down and axon and causes the release of acetylcholine.
Steps To The Skeletal Muscle Contraction
By : Ta'Quanda Allen
Alexis Wright

Step One:
Step 8:
Nerve impulse is inhibited, calcium ions are actively transported back into the Sarcoplasmic Reticulum, using the energy from the earlier ATP breakdown.
Step 9:
The low calcium concentration causes the myosin cross bridges to separate from the think actin myofilaments and the actin myofilaments return to their relaxed position.
Step 10:
Sarcomeres return to their resting lengths, muscle fibers relax and the muscle relaxes.
The END !!! :)
Full transcript