CNS

Nuclei Craniales (8-12 cranial n.)

Nucleus Gracilis in Tuberculum gracile (2nd neuron of epicritic sensibility pathway)

Nucleus Cuneatus in tuberculum cuneatum, "

Nuclei Olivares: In Oliva, Begin Tractus Olivospinalis + Tractus olivocerebellaris

Formatio reticularis: btw Pedunculi cerebellares inferiores

1. Fasciculus gracilis

2. Fasciculus cuneatus (sxynapse with 2nd neurons at nucleus cuneatus)

Axons of them form two groups of fibres:

a) Fibrae arcuatae externae run through Pedunculi cerebellares inferiores to cerebellum

b) Fibrae arcuatae internae - decussaio lemnisci medialis, ascend as lemniscus medialis

->travels to thalamus (diencephalon) to synaps with 3rd neurons:

3. Tractus spinothalamicus lateralis -> "

4. tractus spinothalamicus anterior  -> synapse with thalamus, ascend as lemniscus spinalis

5. Tractus spinocerebellaris posterior: reaches cerebellum  via  pedunculus cerebellaris inferior

6. Tractus spinocerebellaris anterior: passes through pons + mesencephalon. reaches via pedunculus cerebellaris superior-> cerebellum 

1. Tractus corticospinalis: decussatio pyramidum -> tractus corticospinalis lateralis/anterior

2. Tractus corticonuclearis

3. Tractus vestibulospinalis: formed by axons of nuclei vestibulares (fossa rhomboidea)

tractus vestibulocerebellaris: communicates nuclei vestibulares

4. Tractus olivospinalis: formed by axons of nuclei olivares

Tractus olivocerebellaris: leaves nuclei olivares, via pedunculus cerebellaris inferior -> cortex cerebelli

I5. Tractus rubrospinalis

6. Tractus tectospinalis

7. Fasciculis longitudinalis medialis

8. Tractus reticulospinalis

1. Nuclei Pontis: btw are fibrae pontis transversae - that is the tract fibre synapse the pontine nuclei (tractus corticopontinus + tractus pontocerebellaris) 

1. Nuclei cranialis (5-8)

2. Nuclei corporis trapezoidei

3. Formatio reticularis

1. Tractus corticospinalis: belongs pyramidal system

2. Tractus corticonuclearis: "

3. Tractus corticopontinus: F; P; O; T regions of Cortex cerebri 

4. Tractus pontocerebellaris: synapse to 2nd neurons of this pathway nuclei pontis.  crossed + run opposite side of cerebellum via pedunculi cerebellaris medii

1. Lemniscus medialis

2. Lemniscus spinalis: fibres of tractus spinothalamicus anterior/lateralis

3. Lemniscus trigeminalis (crossed, 5 c. n)

4.  Tractus spinocerebellaris anterior

5. Lemniscus lateralis and corpus trapezoideum  (auditory pathway parts)

1. Tractus tectospinalis

2. Tractus rubrospinalis 

3. Tractus reticulospinalis

4. Fasciculus longitudinalis medialis