2.1 The Cells of the NS Flashcards Preview

Behavioral Neuroscience > 2.1 The Cells of the NS > Flashcards

Flashcards in 2.1 The Cells of the NS Deck (13):
1

Ribosomes

The sites at which the cells synthesizes new protein molecules

2

Endoplasmic reticulum

A network of been tubes that transport newly synthesized proteins to other locations

3

Dendritic spines

Short outgrowths that increase the surface area available for synapses

4

Can a single neuron have any number of dendrites or axons?

A neuron can have any number of dendrites but it is limited to no more than one axon

5

Local neuron

A small neuron with no axon or a very short one; can convey info only to other neurons immediately adjacent to it

6

Intrinsic neuron

Also known as an interneuron; the cells dendrites and axon are entirely contained within a single structure

7

Purkinje cell of the cerebellum

The dendrite branch extremely widely with any single plane; allows the cell to be capable of integrating an enormous amount of incoming information

8

Mitochondrion

The structure where the cell performs metabolic activities, providing the energy the cell requires; Many can be found in the presynaptic terminal is because there is a need for much energy in this area

9

Astrocytes

Star-shaped glia; Wrap around the presynaptic terminal's of several axons; picks up neurotransmitters and recycles them; removes waste material, particularly that created the neurons die

10

Oligodendrocyte

Located in the brain; build the myelin sheath

11

Schwann cells

Builds the myelin sheath in the periphery

12

Radial glia

A type of astrocyte; guides the migration of neurons and the growth of their axons and dendrites during embryonic development

13

Korsakoff's syndrome

Prolonged thiamine (vitamin B1) deficiency can lead to death of neurons; often seen in chronic alcoholics; marked by a severe memory impairments