PHYSIOLOGY
SLIDING FILAMENT MODEL
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
Identify what occurs during the Sliding Filament Model. (check all that apply)
|
|
When the nervous system stimulates muscle fibers, the myosin on the thick filaments latch onto actin of thin filaments to begin sliding.
|
|
|
The attachment forms and breaks multiple times during a muscle contraction to generate tension and propel thin filaments toward center of sarcomere.
|
|
|
All sarcomeres in the cell slide simultaneously to make the muscle cell shorten.
|
|
|
The myosin on the thin filaments latch onto actin of thick filaments to begin sliding.
|
Explanation:
Detailed explanation-1: -The sliding filament model describes the process used by muscles to contract. It is a cycle of repetitive events that causes actin and myosin myofilaments to slide over each other, contracting the sarcomere and generating tension in the muscle.
Detailed explanation-2: -Once the myosin-binding sites are exposed, and if sufficient ATP is present, myosin binds to actin to begin cross-bridge cycling. Then the sarcomere shortens and the muscle contracts.
There is 1 question to complete.