human anatomy

Agonist : A substance that activates a receptor to produce a biological response, often enhancing the effect of a neurotransmitter or hormone.

Antagonist: the muscle that opposes the agonist; it inhibits or dampens the biological response by blocking the receptor or reducing the effect of the neurotransmitter or hormone.

Aponeurosis:

Concentric:

Eccentric

Endomysium

Epimysium

Fascicle

Isometric

Perimysium

Peristalsis

Sarcolemma

Acetylcholine

Action Potential

Cross Bridges

Motor Neuron

Motor Unit

Neuromuscular Junction

Sarcomeres

Synaptic Cleft

Contusion

Hernia