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The skeletal muscle complex known as the triad consists of what?
one transverse tubule and two terminal cisternae
Where is the cisternae located?
liver
What are cisternae in Golgi apparatus?
# A cisterna (plural cisternae) comprises a flattened membrane disk that makes up theGolgi apparatus. A typical Golgi has anywhere from 3 to 7 cisternae stacked upon each other like a stack of dinner plates, but there are usually around 6. The cisternae carry Golgi enzymes to help or to modify cargo proteins traveling through them destined for other parts of the cell. # The cisternae also carry structural proteins important for its maintenance as a flattened membrane and its stacking upon each other. # The earliest cisternae are called the cis-cisternae, followed by the medial cisternae, then the trans-cisternae (as they move away from the endoplasmic reticulum). # The formation of new cisternae is often called the cis-Golgi network and at the end of the Golgi where transport to other parts of the cell occurs is called the trans-Golgi network. Both are thought to be specialized cisternae leading in and out of the Golgi apparatus. # Cisternae may also refer to flattened regions of the rough endoplasmic reticulum.
What is a sac of thylakoids called?
Cisternae .
What is stored in the terminal cisternae?
calcium
What is normally stored in terminal cisternae?
Calcium
Normally stored in the terminal cisternae?
Calcium
Is cisternae in an endoplasmic reticulum?
Yes, cisternae are found in the endoplasmic reticulum. The endoplasmic reticulum is a network of membranes in eukaryotic cells that includes cisternae, which are flattened sacs or chambers where various cellular processes take place, such as protein synthesis and lipid metabolism.
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.
Where are the cross bridges involved in muscle contraction?
in the terminal cisternae
How cisternae increase surface area for cellular reaction?
Cisternae are flattened membrane-bound sacs found in organelles like the endoplasmic reticulum and Golgi apparatus, which increase surface area for cellular reactions. By providing extensive surface area, they facilitate the accommodation of more enzymes and proteins necessary for various biochemical processes. This structural configuration enhances the efficiency of metabolic activities and transport within the cell, allowing for greater interaction and processing of substrates. Overall, the increased surface area provided by cisternae plays a crucial role in optimizing cellular function.
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.
