Muscular system Crossword

The space between two cells forming a synapse.
Chemicals that axons secrete on effectors or other neurons.
The sequence of electrical changes that occurs in a portion of a nerve cell membrane that is exposed to a stimulus that exceeds the membranes threshold.
A protein that forms filaments of the protein myosin, contracting muscle fibers.
A protein that, with actin, forms the filaments that contract muscle fibers.
Actin and myosin slide past each other during muscle contraction, while the two filament groups stay relatively still.
A motor neuron and its associated muscle fibers.
The structural and functional units of a myofibril.
Time between application of a stimulus and the beginning response in a muscle fiber.
Continuous passive contraction of muscles, or the resistance to passive stretch during resting state.
Muscles that assist the action of a prime mover.
Membranous channels that extend inward from a muscle fiber membrane.