Answer:
The two properties that determine the conduction velocity in a mammalian neuron are <em>myelination</em> and <em>voltage-gated Na+ channel concentration.</em>
Explanation:
When the electrical stimulus is applied to the membrane of the axon it produces depolarization by activating the sodium voltage-dependent channels all along the axon. Besides, there is an increase in sodium permeability. Depolarization propagates to inactivated regions adjacent to the membrane opening more sodium channels.
There is a directly proportional relationship between the fiber diameter and the conduction velocity. Mielinized fibers are thick and their conduction velocities are very fast.
The conduction velocity increases substantially in myelinated fibers because of the high concentrations of sodium channels in the Ranvier nodes that are not myelinated areas and the diameter of the axon becomes thinner.
<span>Marine mammals can be classified as animal that lives
partially or wholly on coastal waters or oceans from survival while fish can be
classified as a cold blooded gill bearing, egg producing species. However,
whales survive by the development of echolacation, modified lungs, thick layers
of blubber and lager arteries among
other things to ensure their prosperity and survival.</span>
The rabies virus spread through animals and cause deadly effects. The influenza virus is easily passed between humans and is easily treatable and much less deadly.
