Quick question on the process of movement    Multiple sclerosis is a disease in which the peripheral neurons lose their myelin sheath. In this disease, voluntary movement of the limbs is slowed because;  Pick the ones that are true  the rate of opening of ligand-gated Na+ channels is decreased.   the generation of the action potential is blocked at points along the unmyelinated region due to the absence of voltage-gated channels   the action potential amplitude is degraded at the Nodes of Ranvier of the peripheral neuron.   The Schwann cells are targeted and destroyed by the immune system, affecting saltatory propagation.   the rate of opening of ligand-gated Na+ channels is decreased.

Correct answer: Ligand-gated ion channel don’t open until the neurotransmitter diffuses across the synapse and binds to the receptor, The calcium channels are blocked in the presynaptic cells, It takes time for the vesicular exocytosis to occur Please explain why each of the correct answer choices are correct. Thank you.

Choose all that apply [Na*] + [K'] | + + + + This diagram is a drawing of normal conditions that occur in a neuron's axon (not all details are included). This stage that a living neuron would be in, would show that no positive ions are inside the cell current is traveling down the axon the cell will be at rest once the Na ions enter the cell the cell is at rest Na ions are predominantly outside the cel

Matching (may not use all choices; may use some choices more than once) 45. Sección Release of inhibitory neurotransmitter 46. Decreased concentration of leaky sodium channels in the membrane Arsenic poisoning prevents mitochondria from making ATP 47. 48. Extreme sodium deficiency 49. Acetylcholinesterase concentration is decreased 50. Overdose of Potassium Chloride 51. Increased concentration of leaky potassium channels in the membrane Salto de columna A. Makes RMP more negative B. Makes RMP less negative