transverse tubule -->
T tubule
medical dictionary

<cell biology> Invagination of the plasma membrane (sarcolemma) of striated muscle that lies between two tubular portions of the endoplasmic (sarcoplasmic) reticulum to form a triad of membrane profiles adjacent to the A band/I band junction in some cases, in other cases to the Z disc, of the resting sarcomere. Depolarisation of the T tubule membrane triggers the release of calcium from the sarcoplasmic reticulum and eventually muscle contraction.

(11 Mar 2008)

TTL, TTP, TTP-HUS, TTS, T tube < Prev | Next > TTX, tty, TTYL, TU

Bookmark with: icon icon icon icon iconword visualiser Go and visit our forums Community Forums