Lesson 2 - Neurons Flashcards
1
Q
Cell body
A
Control centre of the neuron
2
Q
Nucleus
A
Contains genetic material
3
Q
Dendrites
A
Receives an electrical impulses from other neurons or sensory receptors
4
Q
Axon
A
A long fibre that carries the electrical impulse from the cell body to the axon terminal
5
Q
Myelin sheath
A
Insulating layer that protects the axon and speeds up the transmission of the electrical impulse
6
Q
Schwann cell
A
Make up the myelin sheath
7
Q
Nodes of Ranvier
A
- Gaps in the myelin sheath
- Speed up the electrical impulse along the axon
8
Q
Sensory Neurons
A
- found in sensory receptors
- Carry electrical impulses from the sensory receptors to the CNS via the PNS
- Convert information from sensory receptors into electrical impulses
- Long dendrites and short axons
9
Q
Motor Neuron
A
- Found in the CNS
- Short dendrites and short axons
10
Q
Relay Neuron
A
- Found in the CNS
- Connect sensory to motor neurons
- Short dendrites and long axons
