22 Neuroanatomy: Sensory Tracts Flashcards
1
Q
Ascending Tract
- What kind of innervation do these tracts usually have?
- Tracts
- What are the 2 components of the dorsal (posterior) columns?
- What are the 4 main components of the anterolateral system?
- What are 2 names of the spinocerebellar tracts?
A
2
Q
Ascending Tracts
- Assign each of these a letter
- Dorsal column-medial lemniscus pathway
- Anterior Spinocerebellar Tract
- Fasciculus Gracilis
- Lateral Spinothalamic Tract
- Posterior Spinocerebellar Tract
- Fasciculus Cuneatus
- Anterior Spinothalamic Tract
A
3
Q
Dorsal column-medial lemniscus pathway
- This includes the gracile and cuneate tracts.
- Are these afferent or efferent fibers?
- Are the primary axons of these tracts:
- Small in diameter or large in diameter?
- Myelinated or unmyelinated?
- Are the primary axons of these tracts:
- What are the 3 basic senses these tracts carry?
- Central processes of these tracts
- Do these enter the dorsal or ventral horn?
- After entering the answer to the above question, what are the two main paths that can be formed?
- Are these afferent or efferent fibers?
A
4
Q
Dorsal column-medial lemniscus pathway
- What part of the brainstem do the gracile and cuneate tracts synapse at?
- What structure carries the 2nd order neurons to the thalamus?
- Where in the general CNS are the 1st, 2nd, and 3rd order neurons of this pathway located?
A
5
Q
Dorsal column-medial lemniscus pathway
- Assign a letter to each
- Lissauer’s tract
- Substantia gelatinous
- interneurons
- motor neurons
- What does each of the colored areas represent?
A
6
Q
Somatotopic Organization
- Fasciculus Gracilis
- Where in the spinal cord does this exist?
- What areas of the body does it convey info from?
- Fasciculus Cuneatus
- Where in the spinal cord does this exist?
- What areas of the body does it convey info from?
- What info travels in the most lateral part of the posterior column? The most medial?
A
