Topic 19: Nervous System - Nervous System Pathways - Ascending Tracts Flashcards
1
Q
Name the 3 ascending tracts
A
- Dorsal (Posterior) column pathway
- Spinothalamic pathway
- spinocerebellar pathway
2
Q
what is the function of the dorsal column pathway tract?
A
Sensations can be precisely located (touch)
3
Q
what are the receptors in the dorsal column pathway tract?
A
free Nerve endings
ex. meissners
4
Q
what are the spinothalamic pathway tracts? (20
A
- non-specific
- difficult to localize
5
Q
what are the receptors in the spinothalamic pathway tract?
A
- temperature
- pain
6
Q
What is the spinocerebellar pathway tract?
A
- ascending tracts from spinal cord to cerebellum
7
Q
What are the receptors of the spinocerebellar pathway tract?
A
- proprioceptors
8
Q
what occurs to the second order neurons in the spinocerebellar tract? (2)
A
- goes directly to cerebellum (no third order)
- therefore no conscious perception and decussation
