PSL 310 Unit 1: Multipolar Neuron

Dendrites

Antennae, extensions of plasma membrane, extend surface area for presence of ligand-gated receptors that can bind NTs released from other neurons, has dendritic spines, has mitochondria

What info do dendrites pick up from other neurons?

Neurotransmitters

Dendritic spines

Site of neuron synapse

Presynaptic neuron

Cell that is synapsing

Postsynaptic neuron

Cell after the synapse

Cell body

AKA Soma, synapses can form, contains regular cell body things like nucleus and organelles

Axon hillock

Last portion of cell body, brain of neuron

Initial segment of axon

First region of axon

Internode

Area with myelin

Node of Ranvier

Area with no myelin, APs propagated

Telodenria

Branches of axon at end that terminate in synaptic terminals

Synaptic terminal

AKA synaptic knob, release NTs

Axon collaterals

Branching off of axon so the neuron can affect more than one cell