Neuromuscular Junction (NMJ)

A specialized synapse between a motor neuron and a skeletal muscle fiber, where electrical signals from the nervous system are converted into muscle contractions.

Key Functions:

• Transmits electrical signals from motor neurons to muscle fibers.
• Initiates muscle contraction.
• Uses acetylcholine as its primary neurotransmitter.

Interacting Systems & Components:

• Motor Neuron (presynaptic terminal)
• Skeletal Muscle (postsynaptic muscle fiber)
• Acetylcholine (ACh) (neurotransmitter)
• Acetylcholine Receptors (on muscle fiber)
• Muscle Contraction (essential for)