Protuberancia Nuclis

Question 1

La protuberancia tiene nuclis de quienes nervios craneales (origenes reales)

Answer 1

V - trigemino
VIII - Vestivulo-coclear
IX -Glossofaringeo
X - Vago
XI - accesario
XII - hipoglosso

Question 2

Que nucleo de trigemino tiene el bulb ? (V)

Answer 2

Nucleo espinal - sensitivo

Question 3

Que nucleo/s de glossofaringeo tiene el bulb ? (IX)

Answer 3

N. ambiguo (motor)
N. de tracte solitari (sensitiu)
N. Salival inf. (parasimpatic)

Question 4

Que nucleo de vago tiene el bulb ? (X)

Answer 4

N. ambiguo (motor)
N. de tracte solitari (sensitiu)
N. Dorsal de vago (parasimpatic)

Question 5

Quin nuclis propios tiene el bulb

Answer 5

1. Olivar inf
2. N. gracil
3. N. cuneat

Question 6

Which nucleus does the anteorior part of the dorsal column go to? And the posterior part? Why do they split up?

Answer 6

Posterior - Cuneat
Anterior- goll (gracil)
They split up because there is a somatotopic representation

Question 7

What is the cordon dorsal - lemnisc medial pathway?

Answer 7

Dorsal column -> Fasciculos gracil y cuneat -> fibras arcuadas internas -> lemnisc medial

Question 8

What are the ascending tracts of the bulb? Are they HL or CL

Answer 8

1. Lemnisc Medial - CL (deceussation sensitiva at the bulb level; anterior/posterior and elft/right decussations)
2. Lemnisc Trigeminal - CL
3. Lemnisc espinal(aka Tracte Espinotalamico) - CL

Question 9

What are the descending tracts of the bulb? Are they HL or CL. Where do they cross over?

Answer 9

1. Tracte piramidal (corticoespinal) - CL; crosses over at the bulb (pyramidal decussation)
2. Tracte rubroespinal - CL; mesencephalic decussation - ventral tegmental decussation
3. Tracte tectoespinal - CL; mesenphalic decussation - tegmental dorsal

Question 10

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