Answer: It's the mitochondria.
Explanation:
Answer:
The source of Calcium (Ca⁺⁺) for the skeletal muscle cells is the sarcoplasmic reticulum, the main store of intracellular Ca⁺⁺.
Explanation:
Calcium (Ca⁺⁺) is an ion that plays an important role in muscle contraction, a process that requires high cytoplasmic concentrations of this ion to promote myofibrillary activity.
The sarcoplasmic reticulum (SR) -equivalent to the endoplasmic smooth reticulum- is an organelle that regulates the contractile activity of skeletal muscle. The two terminal cisterns of the SR attach to the T-tube, forming a triad, which surrounds the myofibrilla.
Once the muscle cell receives the signal to contract, the Ca⁺⁺ channels are opened and allow Ca⁺⁺ to enter the cell, promoting the exit of this cation from the SR and increased its cytoplasmic levels. This stimulates muscle contraction.
<span>'Peritoneal dialysis' therapeutic measure is used to treat renal failure. When chronic kidney disease progresses to the point where kidneys are no longer able to function, it is called renal disease. To stay alive, people will need to have dialysis treatment called peritoneal dialysis.</span>
Answer:
genus, specie
Explanation:
The binomial nomenclature is a naming system used by scientists to identify organisms, it's composed by two words, <em>the first refer's to the individual's genus, a small group of closely related organisms, and the second word is the specific name or epithet used to diffetentiate species in the same genus. </em>
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rapid warming of the valley floor
