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This hormone plays an important role in synchronizing physiological function with the cycle of daylight and darkness.
Terminal Cisternae
Enlarged areas of the sarcoplasmic reticulum around the muscular T-tubules that store calcium ions for muscle contraction.
T Tubule
T Tubules, or transverse tubules, are extensions of the cell membrane that penetrate into the center of skeletal and cardiac muscle cells, facilitating the rapid transmission of signals.
Triad
Two terminal cisternae and a T tubule between them.
Mitochondria
Organelles found in large numbers in most cells, where the biochemical processes of respiration and energy production occur.
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