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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.
For a sarcomere of a skeletal muscle, define the following terms: A is the length of the A Band; H is the length of the H Zone; I is the total length of the I Bands in the sarcomer
Prevention of flap dehiscence Flap margin dehiscence (separation) is prevented by approximating the edges of the flap over healthy bone by handling the edges of the flap gently
Q. How are animals divided according to their kind of digestive process? At a distance from sponges that do not have a digestive cavity where extracellular digestion takes plac
How does the swim bladder of fishes work allowing fishes to control their depth under water? From Hydrostatics it is called that an object does not sink if its density is equal
harmful and beneficial usesa of phylum porifera
Cori Cycle Skeletal muscles have some mitochondria, yet are competent of vigorous activity. as a output, the little stores of oxygen are rapidly depleted, causing the muscle ti
Promoters The promoter region contains the DNA sequences that allow the formation of the transcription initiation complex that give the specificity of expression. Promoters are
Explain the DNA structure in details? Structure : Each DNA molecule is a double stranded polymer, consisting of perhaps thousands or millions of linked nucleotides. The two
(a) Explain the structure of a human sperm. (b) Give a schematic representation showing the events of Spermatogeninesis in human male.
Q. Does each amino acid have a central carbon? To which organic group is that central carbon bound? A carboxyl group -NH 2 , an atom of hydrogen - COOH, an amine group-H and a
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