The correct answer is option B, that is, myelin sheaths.
Explanation:
Myelin refers to an insulating layer, or a sheath, which get produced surrounding the nerves, comprising those in the spinal cord and the brain. It is formed of fatty substances and protein. This myelin sheath permits electrical impulses to conduct briskly and effectively between the nerve cells.
The neuron’s myelin sheath comprises the cells containing fat, which shield the axon from electrical activity. The insulation functions to enhance the rate of conduction of signals. The myelin sheath provides the whitish look to the brain's white matter.
I think the correct answer from the choices listed above is option A. <span>A doctor is exploring some tissues with a blunt probe. She notices that the tissue is white and fatty and seems to be concentrated within the spinal cord. she is observing gray matter. Hope this answers the question.</span>
This is 21st century .In this time our society as well as all of the world had become advanced and modern.So,in this time if we started to work without any technology then while working we need more manpower and our time will be loss.Science ,technology,engineering and maths play important role in modern world d .It helps in sustain able development and helps any country to be self dependent and makes profit by which Nations will be developed and it helps to win the future.
<span>One group is given a larger dosage than is typically prescribed. A second group is given a smaller dosage than is typically prescribed Then results of the groups are compared to each other.
The thing that is missing in this experimental design is a third group who are tested with the typical dosage.</span>
