Drinking Alchol While Driving
Many people need to do more than _______ minutes of moderate-intensity physical activity a week to meet weight-control goals.
c. 120
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).
The cells eventually start to die out, causing for organs to slowly dye, starting with the lungs and heart which is why you may feel cold as the blood thats pumped stops...I hope your depressed now...Naw just kidding health is important to know :)
The answer is D: cycling uphill
