Imagine a neuron lost the ability to close its sodium channels. Could this neuron still propagate ...

Answer to q. 1

ANSWER: No If the voltage-gated sodium channels could not be shut, the sodium would leak back into
the cell as fast as the sodium-potassium pumps could move it out. As a result, the cell would
be unable to maintain a resting membrane potential of - 70mV. Without that, the
depolarization characteristic of an action potential could not occur.

Answer to q. 2

ANSWER: The autonomic nervous system directs the activity of smooth and cardiac muscle, and glands.
All of these are systems that we cannot directly control (i.e., you can't tell' your pancreas to
release insulin, or not to release insulin). As a result, the activities of this system are
involuntary or cannot be controlled. On the other hand, the somatic nervous system can be
thought of as voluntary because most of its actions are under our control.

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