<h2>CNS </h2>
Explanation:
An example of a myelin producing cell in the CNS is oligodendrocyte
- The major function of oligodendrocytes is the formation of myelin
- Myelin acts as an insulator of axonal segments and is a prerequisite for the high velocity of nerve conduction
- Larger axons form thicker myelin
- During development, oligodendrocytes arise from precursors located in the sub-ventricular zone such as the sub-ventricular zone of the lateral ventricles for the cerebrum or the fourth ventricle for the cerebellum
- In the spinal cord, oligodendrocytes originate from the ventral regions of the neural tube and in the optic nerve they migrate into the nerve from the third ventricle
- It is the oligodendrocyte precursor cells which migrate to their destination where they then differentiate into the more mature oligodendrocytes
- The proliferation of the oligodendrocyte progenitor cells is controlled by a number of growth factors released predominantly from neurons but also from astrocytes such as platelet derived growth factor (PDGF) or fibroblast growth factor (FGF)
Answer:
Inside the axon terminal of a sending cell are many synaptic vesicles. These are membrane-bound spheres filled with neurotransmitter molecules. There is a small gap between the axon terminal of the presynaptic neuron and the membrane of the postsynaptic cell, and this gap is called the synaptic cleft.
Explanation:
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Well, there wouldn't be really any water for the animals to drink.If it's very hot, and there is litte to no rain can cause bodies of water to evaporate so there will be less water to be drinken by the animials.If there in a drought there's not much they can do, just they can try consuming water when needed the most.If there is a good amount of water then they can drink whenever.If there would've been a bunch of rain they wouldn' have to worry, but in this case they have to worry because they don't have much water.
Limiting factors:
Little to no water due to drought.
Animals might die due to thirst.
Answer:
they were destroyed especially the houses because of how close they are build to the sea, in addition with the fact that the sea levels are rising
Explanation: