MUSCLE PHYSIOLOGY

PHYSIOLOGY

SLIDING FILAMENT MODEL

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
An Action Potential in the muscular system is essentially ____
A
a sequence of events of chemicals communicating with other chemicals to trigger a muscle contraction.
B
the biochemical communication between a motor neuron and the muscle it controls.
C
the denaturation of Acetylcholine to relax a muscle and stop a contraction.
D
the contraction of muscles shortly after death due to the unavailability of ATP and excess of Calcium.
Explanation: 

Detailed explanation-1: -The motor neurons release a chemical, which is picked up by the muscle fibre. This tells the muscle fibre to contract, which makes the muscles move. Neurons carry messages from the brain via the spinal cord. These messages are carried to the muscles which tell the muscle fibre to contract, which makes the muscles move.

Detailed explanation-2: -The neuromuscular junction-where nerves and muscle fibers meet-is an essential synapse for muscle contraction and movement.

There is 1 question to complete.