Which portion of a neuron originates action potentials (nerve impulses) , to send to other neurons, glands, or muscle cells?

A) Nucleolus
B) Dendrite
C) Neurilemma
D) Axon hillock
E) Nissl bodies (chromatophilic substance)

Axon Hillock

The conical region of a neuron's axon where the cell body transitions to the axon, and where action potentials are initiated.

Action Potentials

Brief reversals in the electrical charge of a neuron's membrane, which propagate along the neuron to transmit signals.

Neurilemma

The outermost layer of Schwann cells that surrounds the axon of a neuron, essential for the regeneration of peripheral nerve fibers.