4.2 - Structure of a Neuron Flashcards
(6 cards)
1
Q
neurons
4.2
A
receive information from other neurons, process it and communicate it to other neurons
4.2
2
Q
dendrites
4.2
A
- branches coming off the soma
- receive information from other neurons which they carry from synapses to soma
4.2
3
Q
soma
4.2
A
- the largest part of the neuron
- controls the metabolism and maintenance of the neuron
- soma receives messages from other neurons
4.2
4
Q
axon
4.2
A
- nerve fibre that extends from soma
- carries info towards the cells that communicate with that neuron
- axons have two or more offshoots, and some can be up to a metre long
4.2
5
Q
myelin
4.2
A
- cover the neuron
- coating of cells that facilitates the transmission of information to other neurons
- white rather than grey
- protects axon from chemical and phytsical interference to the electrical impulses that travel along it
- insulation enables information to travel much faster
4.2
6
Q
axon terminals
4.2
A
- transmit messages to the next neuron
- have terminal buttons
- sacs that secrete a chemical called a neurotrnasmitter whenever lectrical impilseds aree sent down the axon
- axon terminals of one of neuron link with the dendrites of the next neuron
4.2
