Examlex
How did Romanesque churches differ from earlier ones?
Excitation-Contraction
A biological mechanism that describes the process of muscle fiber contraction triggered by electrical impulses.
T Tubules
Tube-like structures in muscle cells that play a role in transmitting electrical impulses from the cell surface to the interior, triggering muscle contraction.
Sarcolemma
The fine transparent tubular sheath which envelops the fibers of skeletal muscles.
Sarcoplasmic Reticulum
A specialized type of endoplasmic reticulum in muscle cells that stores and releases calcium ions.
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