Terminal cisternae are enlarged areas of the sarcoplasmic reticulum surrounding the transverse tubules. These discrete regions within the muscle cell store calcium (increasing the capacity of the sarcoplasmic reticulum to release calcium) and release it when an action potential courses down the transverse tubules, eliciting muscle contraction. Because terminal cisternae ensure rapid calcium delivery, they are well developed in muscles that contract quickly, such as fast twitch skeletal muscle. The T-tubules plus adjacent terminal cisternae create a triad. In cardiac muscle, adjacent to the intercalated disks, one would find a diad which consists of a T-tubule adjacent to a single terminal cisterna.eli <span>· 5 years ago</span>
These limbs (see attached image) provide evidence of common ancestry because
they have the same basic structure. In evolution we have convergent evolution and divergent evolution; In convergent evolution we focus on the analogous structure; which have different ancestry but perform similar functions while in divergent evolution, we have homologous structures which have a common ancestry and similar structure; but performs different functions, like the limbs described above.
251.16 nitrogen gas particles
67.62 oxygen gas particles
0.13 argon gas particles
Explanation:
Air is a mixture of many gases. Different gases have their own percentage composition in air.
Nitrogen = 78%
Oxygen = 21%
Argon = 0.04%
Since the air in the container is made up of 322 particles, we can find the the number of nitrogen, oxygen and argon gases in it;
Number of Nitrogen gas = x 322
= 251.16 nitrogen gas particles
Number of oxygen gas = x 322
= 67.62 oxygen gas particles
Number of argon gas = x 322
= 0.13 argon gas particles
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Air, a mixture brainly.com/question/10897667
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Answer:Human evolution is the evolutionary process that led to the emergence of anatomically modern humans, beginning with the evolutionary history of primates—in particular genus Homo—and leading to the emergence of Homo sapiens as a distinct species of the hominid family, ... Human evolution from its first separation from the last common ancestor
Explanation:
Answer:
Paired lungs
Explanation:
Paired lungs comprise the respiratory system of a bird.
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