Organisation of Nervous system Flashcards
1
Q
Neurons
A
Functional unit of nervous system
2
Q
Neurons: Cell body
A
Contains all the major cell organelles, generates genetic information and machinery for protein synthesis
3
Q
Neurons: Dendrites
A
Receive input from other neurons and convey it to the cell body
4
Q
Neurons: Axon
A
Sends info away from the cell body to other neurons or effectors
5
Q
Neurons: Axon terminal
A
Essential for synaptic transmission to occur
6
Q
Myelin sheath
A
Fatty covering around axons - considered ‘white matter’
7
Q
Nodes of ranvier
A
Gaps between adjacent segments myelin, exposed to extracellular fluid
8
Q
Glia cells
A
Produce myelin sheath
Support, nurture and protect nerve cells
Oligodendrocytes: produce myelin in the central nervous system
Schwann cells: produce myelin in the CNS
