Motor Neuron - Functions

Dendrites

Convey afferent nerve impulses (towards cell body)

Receive information from other neurons

Cell Body

Nucleus and other cytoplasmic organelles support neuron structure and function

Mitochrondion

Synthesize ATP

Nissl Bodies

Important role in axon regeneration

Nucleus

DNA replication

DNA transcription into mRNA

rRNA synthesis and ribsome subunit assmebly

Axon Collateral

Array of fine terminal extensions

Axon Hillock

Cone-shaped part of cell body from which axon arises

Axoplasm

Cytoplasm inside the axon

Axolemma

Plasma membrane of the axon

Axon

Conveys efferent nerve pulses (away from cell body)

Conveys information to other neurons and effectors

Myelin Sheath

Maintains action potential conduction along axon

Serves as electrical insulator

Increases speed of nerve impulse conduction

Node of Ranvier

Amplified conduction of action potential via saltatory conduction

Interruptions of the myelin sheath along axon

Telodendria

Fine branches at the ends of axons

Axon Terminals

Where axons communicate with other neurons or effectors

Target Cells

Cell which neuron is communicating with