Flashcards in Muscle Deck (15):
A contractile protein that is a part of thin filaments in muscle fibers.
A neurotransmitter liberated by many peripheral nervous system neurons and some central nervous system neurons. It is excitatory at neuromuscular junctions but inhibitory at some other synapses.
The ability of cells or karts of cells to actively generate force to undergo shortening for movements. Muscle fibers (cells) exhibit a high degree of it.
The ability of tissue to return to its original state after contraction or extension.
The ability of muscle tissue to stretch when it is pulled.
Region of the sarcolemma of a muscle fiber (cell) that includes acetylcholine receptors, which binds ACh released by synaptic end bulbs of somatic motor neurons.
Motor End Plate
A motor neuron together with the muscle fibers/cells it stimulates.
The oxygen-binding, iron containing protein present in the sarcoplasm of muscle fibers (cells); contributes the red color to muscles.
The contractile protein that makes up the thick filament of muscle fibers.
The cell membrane of a muscle fiber (cell), especially of a skeletal muscle fiber.
A contractile unit in a striated muscle fiber (cell) extending from one Z disk to the next Z disk.
The cytoplasm of a muscle fiber (cell).
A network of saccule sand tubes surrounding myofibrils of a muscle fiber (cell), comparable to endoplasmic reticulum; functions to store/absorb calcium ions during relaxation and to release them during contraction.
Invagination of the epimysium that divides muscles into bundles.