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Explain dysmenorrhea and amenorrhea.
Myosin Myofilaments
Myosin myofilaments are thick filaments found in muscle cells that, along with actin filaments, play a key role in the muscle contraction process by sliding past each other.
Z Disc
A specialized region within a muscle fiber's sarcomere that serves as the attachment point for actin filaments, marking the boundary between adjacent sarcomere units.
Anisotropic Band
A region within myofibrils of skeletal muscle cells that appears darker under a microscope due to the presence of thick myosin filaments.
Neuromuscular Junction
The neuromuscular junction is a synapse between a motor neuron and the muscle fiber it innervates, facilitating muscle contraction.
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