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Alenkasestr [34]
3 years ago
15

______ is the process by which nerve cells are coated with far cells that enhances the speed and efficiency of the information t

raveling through the nervous system. (Remember to type only one word in the blank.)
Biology
2 answers:
givi [52]3 years ago
5 0

Answer:

Myelination

Explanation:

The covering of myelin around the axons is called the myelin sheath. This myelin sheath helps in transfer of information faster and also in complex  processes of the brain. The process of myelination begins in the PNS (peripheral nervous system).

The myelinated section are seperated from each other with a gap called nodes of ranvier. Glial cells (oligodendrocytes) forms the myelin sheath in the central nervous system and schwann cells (glial cells) forms the myelin sheath in peripheral nervous system. The propagation of electrical impulse in the myelinated fibers is by saltatory conduction that is from one node to another.

agasfer [191]3 years ago
5 0

Answer:

Myelination

Explanation:

Myelination refers to the process which forms a protective layer made up of lipid-containing substance fats around the neurons. This protective layer around the neuron is known as the myelin sheath.

The myelin sheath is formed by the Schwann cells in the peripheral nervous system by the extension and helical wrapping of the plasma membrane of the Schwann cells around neurons. similarly, Oligodendrocytes form the myelin layer around the neurons in the CNS.

Thus, myelination is the correct answer.

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4. There are a variety of receptors and second messenger systems in cells that in many cases exhibit cross-talk with each other
frutty [35]

Answer:

These 3 receptors are different from each other. They do differ from each other by their location and function.

1. Testosterone receptor :  It is an Androgenic receptor

2. Ferrotransferrin receptor :  It acts as an element-binding protein which is iron responsive.

3. Fibroblast growth factor :  It acts as a growth factor.

Explanation:

1. Testosterone :

Location- Xq 11-12 in the X chromosome.

Function-  

  1. maintains male skeletal integrity by osteoblast and osteocytes.
  2. maintains female sexual, somatic and behavior.
  3. develops male sexual characters.

2. Ferrotransferrin :

Location- chromosome 3q21

Function-

  1. intakes iron in the cell.
  2. maintains the cellular iron equilibrium.
  3. post-transcriptional modification.  

3. Fibroblast (growth) :

Location- chromosome 4p16.3

Function-

  1. helps in bone development.
  2. helps in bone growth maintenance by ossification.

8 0
3 years ago
Your medical bill is 2345 your health insurance covers 70% after a 120 deductible what amount of the bill will you pay
astra-53 [7]
The solution for the problem is:
Since there is $120 deductible, you get to pay…$2345 - $120 = $2225.
But since the insurance covers 70%, so you will only pay the 30%, so it is:30% x 2255 =30/10 * 2225 == $667.50 would be the amount you will be paying.
3 0
3 years ago
Read 2 more answers
In what two ways did an understanding of geology influence darwin
Jobisdone [24]

Answer: Geology played a major role in Darwin's life and scientific work: The formation of volcanoes, the slow subsidence of coral reefs, the rising of the Andes by earthquakes, the fossil relatives to modern species in South America,

Explanation:

8 0
2 years ago
Abnormalities present in the cells that line the uterus may prevent the production of offspring by directly interfering with whi
Dmitry [639]

Answer: Implantation

Explanation:

The uterus is the main site for the implantation of the embryo. It is the place where the embryo spends 9 months in the mother.

When the male and female gamete combine they form a zygote. It gets implanted in the uterus and then there is cell division and the development of embryo takes place there only.

Any abnormalities in this region will interfere in the process of implantation.

7 0
3 years ago
The following are the steps for B-cell activation. The steps are in an incorrect order.
Nataly_w [17]

Answer:

4. B cells become activated by interacting with helper T cells.  

1. B cells display antigens in MHC class II receptors on the cell surface.  

2. Antibodies released by plasma cells bind to the antigen so they will be destroyed by other cells of the immune system.

3.B cells rearrange their DNA to create a unique B-cell receptor.  

5. B cells undergo clonal expansion.

6. B cells digest antigens that bind to the antibodies on their surface.

Explanation:

B-cells get activated by interacting with helper T cells when they bind to the antigen to receptors i.e (MHC class II receptors on the cell surface) on the surface of the cell. Series of activities such as release by plasma cells which cause rearrangement of B cells causes the cell to divide and proliferate. The process through which daughter cells arise from a parent cell called clonal expansion.

4 0
3 years ago
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