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In the PNS; myelin Is formed by Schwann cellsb.Is formed by oligodendrogliaInsulates only- Jrond.a and are correctb and € are correctQuestion24For internal ch...

Question

In the PNS; myelin Is formed by Schwann cellsb.Is formed by oligodendrogliaInsulates only- Jrond.a and are correctb and € are correctQuestion24For internal chloride concentrations of ZOOmM and external concentratlons BOmM and chlaride permeable membrana; ion Flux and currentInward, inwardInward, outwardOutward, InwardOutward, outward

In the PNS; myelin Is formed by Schwann cells b.Is formed by oligodendroglia Insulates only- Jron d.a and are correct b and € are correct Question24 For internal chloride concentrations of ZOOmM and external concentratlons BOmM and chlaride permeable membrana; ion Flux and current Inward, inward Inward, outward Outward, Inward Outward, outward



Answers

The myelin sheath is produced around axons in the PNS by (a) ganglia (b) neuron cell bodies (c) dendrites (d) Schwann cells (e) oligodendrocytes

So to answer this question, we have to know the structure of miran and the function of Meilin sheet. So the question is mainly about Meilin sheet. So we should know that what is smilin ship? So in a neuron we have cell body which have been rights. And as we know, the electrical signals travel in Iran so that they can dress. They received the electrical signal. They go through the eggs on and then they exit through the exam terminal. So on the exam we have marlin sheet and the function of this myelin sheet is too store the signal so the signal is not lost. So the signal travels faster with more with this activity, and that is the function of my land sheet. Now, the myelin shoot is also present in um seeing this and also in pianist peripheral nervous system. In the central nervous system, the cells that make Myelin sheet are illegal dangers. And in the perfect nervous system, the cells that make up violin sheet are Schwann cells. So the correct option here is that the myelin sheet is generally present around long exons in either sentinel system or perfection of a system, And the correct option is the.

The right answer to this question is Option C. That is each segment of each segment of mining sheet. Milen sheet is formed by is formed by once we answered. Once one city myelin sheath is million sheep is present in. Is present in the myelin ated fibers. In the Myelin ated fibers favours. Mhm. I mean the mind needed no fibers, nerve fibers. It is made above. It is made above meet above a substance of a substance of lipids than proteins and water, proteins and water called called mylan, called myelin and soaps as and serves us and insulating as an insulating layer, insulating layer, preventing loss, preventing laws of energy of energy, preventing loss of energy of the nerve of the milf impulse during its during its passage along the fiber. During its passage alone. The fable, I hope this explanation is clear to you. The answer to our question is Option C. Thank you.

How everyone this is, Ricky. And today we're working on problem number 20 from chapter 13 and I'm gonna be drawing a sensory effort. So here his hour, there's a location of our sensory receptors. Yeah, I know. Lots of branching closet branching. Here's our so much on the dorsal dorsal root ganglion. And then we have our Exxon projection. No. Remember that axons are covered in Milen and Meiling insurers, proper conduction of actual potentials home. And unlike in the central nervous system where Meilan is made from by only a danger sites in the peripheral nervous system violin is formed by Schwann cells. Hope this video was helpful and I will see you in the next one.

So swan cells. Those, um, form the might myelin, which is my one is that white fatty substance. She around the nerve fibers outside of the brain and spinal board. There's a fish one cells. Um, if you think about what these other turns, ours of neurons receive signals from your sensory receptors of other neurons, and there's a couple of different kinds of euro Delia and those are cells that outnumber neuron signed of one and take up more than half the volume of the brain. My grow Delia support neurons and then golf, bacteria and cellular to breathe. And astro sides provide nutrients to neurons and produce ah, hormone that may be used to help cure Parkinson's. When the day, um, it's a derived growth factor hormone out. So going back up, the Schwann cells are the ones that form the myelin sheath. So the white fatties of the sheath around the nerve fibers outside the brain and spinal cord


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