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A T-tubule surrounded by two terminal cisternae is called a triad. The terminal cisternae, along with the transverse tubules, are the mechanisms of transduction from a nervous impulse to an actual muscle contraction .
In the histology of skeletal muscle, a triad is the structure formed by a T tubule with a sarcoplasmic reticulum (SR) known as the terminal cisterna on either side. [1] Each skeletal muscle fiber has many thousands of triads, visible in muscle fibers that have been sectioned longitudinally. (This property holds because T tubules run ...
T-tubules within the heart are closely associated with the intracellular calcium store known as the sarcoplasmic reticulum in specific regions referred to as terminal cisternae. The association of the T-tubule with a terminal cisterna is known as a diad. [6]
The thinner projections, running horizontally between two terminal cisternae are the longitudinal sections of the SR. The sarcoplasmic reticulum ( SR ) is a membrane -bound structure found within muscle cells that is similar to the smooth endoplasmic reticulum in other cells .
Most muscle cells contain a triad, which is a joining of 2 terminal cisternae of the sarcoplasmic reticulum and one t- tubule. However, cardiac muscle cells contain a diad , which is a linking of only one sarcoplasmic reticulum with its respective t-tubule.
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This network is composed of groupings of two dilated end-sacs called terminal cisternae, and a single T-tubule (transverse tubule), which bores through the cell and emerge on the other side; together these three components form the triads that exist within the network of the sarcoplasmic reticulum, in which each T-tubule has two terminal ...
Anne Fletcher, the author of Inside Rehab, a thorough study of the U.S. addiction treatment industry published in 2013, recalled rehabilitation centers derisively diagnosing addicts who were reluctant to go along with the program as having a case of “terminal uniqueness.” It became so ingrained that residents began to criticize themselves ...