Vitamins are very important in the body. They are needed in certain processes in our body to function well and maintain a good health. They aid in improving our immune system, strengthening our bones and other good health indicators. The vitamins that are most imporant to be in the body are vitamins A, C, D, E, K, B1, B2, B3, pantothenic acid, biotin, vitamin B6, vitamin B12, and folic acid.
Answer:
Beach, this should not be for any school stuff that's wrong if it is because some people struggle with stuff like this but if it was only supposed to be some kind of lesson or whatever then i'm sorry.
Explanation:
Answer:
Myelinated Axons; leak channels are insulated by myelin leading to less loss of current flow and better conduction velocity. Ion channels omly located at nodes of ranvier; thus signal has sultatory conduction along myelin sheaths and jumps and move much quicker
Demyelinating diseases; along locations where myelin sheaths once was current links occur and conduction slows, the signal cannot make it very far because it looses energy as it travels through the axon
Unmyelinated axon; Ion channels are sequentially placed all along axons; thus it takes longer to send signal down axon. the energy isn't leaked out, it still contains the same signal but it is simply slower. distance between voltage gated channels needs to be small enough so local current flow can depolarize the membrane.
N/B; Harder to generate action potential in demyelinating disease
axon diameter( bigger diameter= less resistance= faster current).
