Neuromuscular junction and muscle contraction

This video describes the events that occur from an action potential in a motor neuron to an action potential and contraction in a muscle cell.

Time stamps

Overview Neuron action potential to muscle action potential (animations) 0:14

Quick review of muscle structures 1:07

Details of a muscle cell 1:40

Neuromuscular junction 3:51

Breakdown of acetylcholine 10:45

Sarcomeres and thick and thin filaments 11:51

Muscle contraction and sarcomere shortening 17:54

Role of calcium and regulatory proteins in muscle contraction 20:01

ATP and the crossbridge cycle 20:42

2 reasons why ATP is required for muscle contraction 25:56

Motor units and concentric, isometric and eccentric contractions 27:20