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What is the difference between a dyad and triad in skeletal cardiac muscle?
In skeletal muscle, a triad is formed when a T-Tubule is flanked on either side by the calcium containing Terminal Cisternae of the Sarcoplasmic Reticulum, at the level of the Z-line. The intimate association of these three membranous sturctures (Terminal Cisternae---T-Tubule---Terminal Cisternae) for a Triad. This differs from a diad (or Dyad), in cardiac muscle where the T-Tubule is only intimately associated with ONE Terminal Cisternae.
The triads of a muscle fiber consist of?
Two terminal cisternae and a T-tubule
The enlarged perpendicular chambers of the sarcoplasmic reticulum that store calcium ions lies adjacent to the t tubule at the you band and the a band interface of the skeletal muscle sarcomere?
It is the terminal cisternae
The skeletal muscle complex known as the triad consists of what?
one transverse tubule and two terminal cisternae
What event most directly triggers the release of calcium from the terminal cisternae?
action potential propagating down the T tubule
What stores calcium important in muscle contractions?
The Sarcoplasmic Reticulum stores calcium and releases it through the terminal cisternae into the tubule.
Enlarged portion of sacroplasmic reticulum on either side of a transverse tubule?
These structures are called terminal cisternae, and they function to store and release calcium ions during muscle contraction. The close proximity of terminal cisternae to transverse tubules allows for efficient communication and regulation of calcium release during excitation-contraction coupling in muscle cells.
Enlarged portion of sarcoplasmic reticulum on either side of a transverse tubule?
The enlarged portion of sarcoplasmic reticulum on either side of a transverse tubule is called a terminal cisterna. These terminal cisternae play a vital role in the excitation-contraction coupling of skeletal muscle cells. They store and release calcium ions, which are essential for muscle contraction.
Two terminal cisternae and a T- tubule?
This is a structure found in skeletal muscle cells known as a triad. It consists of two terminal cisternae (enlarged regions of the sarcoplasmic reticulum that store and release calcium ions) and a T-tubule (invagination of the sarcolemma that helps transmit action potentials deep into the muscle cell). The triad plays a crucial role in excitation-contraction coupling, where the action potential triggers the release of calcium ions for muscle contraction.
What does a muscle triad include?
A muscle triad includes one T-tubule and two terminal cisternae of the sarcoplasmic reticulum. This arrangement is responsible for regulating calcium release during muscle contraction in skeletal muscle cells.
What conducts muscle impulses deep in the sacroplasm of a muscle to the cisternae?
I believe the T-Tubule
Which parts of the renal tubule is formed by cuboidal epithelial cells bordered by dense microvilli?
Proximal Convoluted Tubule
