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Q. How does synaptic transmission between neurons take place?
The propagation of the action potential along the axon reaches the region immediately anterior to the presynaptic membrane causing its permeability to calcium ions to change and these ions to enter the cell in the presynaptic area of the axon there are many neurotransmitter-repleted vesicles that by means of exocytosis activated by the calcium influx release the neurotransmitters into the synaptic cleft. The neurotransmitters then bind to specific receptors of the postsynaptic membrane the binding of neurotransmitters to their receptors is reversible that is the neurotransmitters are not consumed after the process. With the binding of neurotransmitters to the postsynaptic receptors the permeability of the postsynaptic membrane is depolarization and the altered that will lead to the first action potential of the postsynaptic cell begins.
What is Intermittent ST Depression ? Ans. Several patients progress from variable ST-segment depression, often associated with respiration, to the classic ST-segment chang
ABA - Dormancy Abscisic acid functions as an antagonist of all three promoters like IAA, GAS and Cytokinins. ABA nullifies the activity of GA, IAA and cytokinin right by a)
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HAIR Presence of hair is main feature of mammals, absent in whale fish. Soft hair in embryo of animals are lanugo. Study of hair is tricology . Part of hair which
Humans have selectively bred many radically different domestic animals(e.g., St. Bernard and Chihuahua dog breeds). Does this activity result in evolution? why or why not?
Q. What is the parasite that causes giardiasis? How is it transmitted and what are the typical manifestations of the disease? The Giardiasis is a protozoal infection caused by
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Explain the concepts of brain development Two concepts that are especially critical to understanding brain development in the very young child are: Symbolic representati
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