The Resting Neuron

question 44

Multiple Choice

The resting neuron

• A)is polarized.
• B)has an internal (+) charge.
• C)has an internal negativity because of the outward leak of Na+.
• D)has an internal negativity because of the inward leak of K+.

---

Definitions:

Soma

In biology, the body of an organism as distinct from its reproductive cells; in psychology, it represents the body as perceived from within.

Depolarization

A reduction in the difference in electric charge across a cell membrane, leading to the activation of nerve or muscle cells.

Reuptake

A process by which neurotransmitters are absorbed back into a neuron after having been released into a synapse, thus terminating the transmission of signals.

Excitatory PSPs

Excitatory postsynaptic potentials are increases in potential that bring a neuron closer to the threshold for firing, facilitating the transmission of signals.