Key Words: Neurons Flashcards Preview

Psychology - Biological > Key Words: Neurons > Flashcards

Flashcards in Key Words: Neurons Deck (15):
1

Neuron

A nerve cell in the brain

2

Synapse

A junction/gap between two neurons

3

Nucleus

This acts like the brain of the cell

4

Dendrites

Attracted to cell body, receive messages from neuron

5

Axon

A long, slender projection of a nerve cell

6

Axon hillock

The specialised part of the cell body that connects to the axon

7

Myelin sheath

Fatty substance that wraps around nerve fibres and increases the speed of electrical communication between neurons

8

Nodes of Ranvier

These are gaps in the myelin sheath

9

Axon terminals

The somewhat enlarged, often club-shaped endings by which axons make synaptic contacts with other nerve cells

10

Terminal buttons/bulbs

Structures on the end of the axon

11

Vesicles

Stores neurotransmitters, ready to be released across the synapse

12

Neurotransmitter

A chemical messenger, travels across synaptic gap between neurons

13

Pre-synaptic neuron

Before synapse - sends out neurotransmitter

14

Post-synaptic gap

After synapse - receives neurotransmitter

15

Receptors

On the post-synaptic neuron, allow or block neurotransmitter