Functional Neuroanatomy

Question 1

Medulla

Answer 1

• Decussation of Pyramids
• Ventral/Dorsal Spinocerebellar tracts
• Nucleus Ambiguus
• Hypoglossal Nucleus
• Motor Nucleus of 10
• Fasiculus cuneatus and gracilus
• Medial Lemniscus (internal arcuate fibers)
• Spinthalamic Tract/spinal lemniscus
• Spinal Trigeminal Nucleus
• Nucleus Solitarius
• Central Tegmental Tract
• Medial Longitudinal Fasiculus (MLF) (For neck when in medulla)
• Olivary nucleus
• Inferior Salivary Nucleus
• Area postrema and cardiac/respiratory centers

Question 2

Central Tegmental Tract

Answer 2

• Carries ascending fibers of taste from solitary nucleus to VPM
• Carries descending fibers from Red Nucleus to Olive as part of the rubrospinal (Cerebellar pathway)

Question 3

Pons

Answer 3

-Vestibular Nuclei
-Cochlear Nuclei
Spinal Trigeminal
Spinal Motor, some other spinal
Ventral spinocerebellar
-pyramids
-MLF
-Abducens nuclei
-Superior olivary nuclei (from cochlea)
-Central tegmental
-Facial Nucleus
-Superior Salvatory (CN 7)
-Locus Coeruleus

Question 4

Midbrain

Answer 4

-Substantia Nigra
-CN 3,4
-Cerebral Peduncle
-Ventral Spinocerebellar
-CTT
Mes 5
-MLF
-Periacueductal gray (pain and defense) (Contains many, NT nucleui. Raphe, coeruleus, tegmental
-Superior and Inferior Colliculus
-Red Nucleus
-Medial Geniculate
-Lateral Geniculuate
-Ventral Tegmental Area

Question 5

Periacueductal Gray

Answer 5

-Pain and defense, recieve fibers from spinthalamic

Question 6

Mes 5

Answer 6

• Contain muscle spindle and GTO from jaw,

- Pseudounipolar Neurons that synapse in principle motor nucleus

Question 7

Ventral Tegmental Area

Answer 7

-Reward area, dopaminergic nerurons

Question 8

Posterior Limb of Internal Capsule

Answer 8

-Corticospinal, Muscle and Sensory

Question 9

Genu of Internal Capsule

Answer 9

-Corticobulbar (motor to cranial Nerves)

Question 10

Anterior Limb of Internal Capsule

Answer 10

-Fibers within and between brain and brainstem structures