Assertion: cardiac muscle's structure | /r/HasProperty | t-tubules
Facets:
Source sentences:
text: Two other important structure seen in this image are T-tubules and sarcoplasmic reticulum.
text: As previously noted, the force of cardiac muscle contraction depends on the intracellular [Ca++]. Opposite each Z line there is a tubular structure, the T tubule, running at right angles to the plasma membrane of the cell (Fig. 2.3).
text: The membranous network of sarcoplasmic reticulum is transversed by structures called T tubules, which are extensions of the sarcolemma (plasma membrane of muscle cells).