Neurons Flashcards
1
Q
what are neurons
A
nerve cells that transmit electrical impulses / chemical messages
2
Q
what are the key types of neurons
A
- sensory
- relay
- motor
3
Q
what is the role of the sensory neuron
A
PNS to CNS
found in clusters call ganglia
4
Q
what is the role of the relay neuron
A
transmits impulses between sensory/ motor
5
Q
what is the motor neuron
A
transmits impulses from CNS to effectors (muscles)
6
Q
what are the key aspects of the neuron
A
- Axon
-Myelin Sheath - Terminal buttons
- Cell body (soma)
- terminals
- Nodes of Ranvier
- dendrites
7
Q
what is the axon
A
carries impulse
8
Q
what is the myelin sheath
A
protects axon
9
Q
what are terminal buttons
A
communicate with next neuron across synapse
10
Q
what is the node of Ranvier
A
makes myelin sheath not continuous
11
Q
what is the cell body
A
genetic material of cell
12
Q
dendrites
A
carry nerve impulses
