tu·bu·lus trans·ver'·sus

a tubular invagination of the sarcolemma of skeletal or cardiac muscle fibers that surrounds myofibrils as the intermediate element of the triad in skeletal muscle and the diad in cardiac muscle; involved in transmitting the action potential from the sarcolemma to the interior of the myofibril.

Synonym(s): T tubule

Farlex Partner Medical Dictionary © Farlex 2012

T tu·bule

(tū'byūl)

The transverse tubule that passes from the sarcolemma across a myofibril of striated muscle; it is the intermediate tubule of the triad.

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