1 / 42

Muscle Contraction

Muscle Contraction. Skeletal muscle cell (myofiber). Sarcomere made of 2 types of filaments; myosin and actin filaments. Mechanism of contraction; sliding filament model. Cross-bridge cycle Cytosolic calcium At rest [Ca ++ ] = 10 -7 M Contraction [Ca ++ ] = 10 -5 M CBs cycle many times

willa-craft
Download Presentation

Muscle Contraction

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Muscle Contraction

  2. Skeletal muscle cell (myofiber)

  3. Sarcomere made of 2 types of filaments; myosin and actin filaments

  4. Mechanism of contraction; sliding filament model

  5. Cross-bridge cycle Cytosolic calcium At rest [Ca++] = 10-7 M Contraction [Ca++] = 10-5 M CBs cycle many times during contraction CBs cycle asynchronously Sarcomere shortens from 2.5 mm to 1.5 mm as filaments slide Number of CBs attached is proportional to force

More Related