Question

3. MAKE A TABLE What are the commonalities for all 1^o neurons, all 2^o, all 3^o? What makes them distinct based on input type?

	Compare – how are all the same	Contrast – where/how do they differ
		DCML	LST	AST
1o
2o
3o

Answer 1

Similarity:

All cary signals and transmit action potential from one part of the body to other

Have dendrites connected to other neurons

Diff:

The three order of neurons

Dcml

1st order carry signal from periphery to spinal cord

2nd order carry signals from spinal cord to the thalamus

3rd ordee carry signals from thalamus to primary sensory cortex

AST

Carries sensory modalities of crude touch and pressure

LST

carries pain and temperature senses

so 2nd order neurons prefer ast and lst pathway