Monday - anatomy Flashcards
Cuneate nucleus
Conscious proprioception from upper limb; contains cell bodies that contribute to the medial lemniscus
Gracile nucleus
Conscious proprioception from lower limb; contains cell bodies that contribute to the medial lemniscus
Lateral cuneate nucleus
Unconscious proprioception from upper limb; receives input from cuneate fasciculus; contains cell bodies of cuneocerebellar fibers that reach the cerebellum via the inferior cerebellar peduncle
Nucleus ambiguus
Motor nucleus for the glossopharyngeal and vagus nerves; some pre-ganglionic neurons innervating the heart
Solitary nucleus
Visceral (taste, touch) sensation; receives first-order neurons from CN VII, IX, and X; second-order neurons terminate in the thalamus
Trigeminal spinal nucleus
P & T sensation from the face; receives first-order neurons from CN V, as well as CN IX & X; gives rise to trigeminothalamic neurons to VPM nucleus of thalamus
Corticospinal / Corticobulbar tract
Motor fibers from pyramidal cells of the cerebral cortex that terminate in the brain stem (bulb) and the spinal cord
Cuneate fasciculus
Proprioception from upper limb; cell bodies located in DRG
Gracile fasciculus
Proprioception from lower limb; cell bodies located in DRG
Medial lemniscus
In the medulla, it is where the dorsal column medial-lemniscus pathway secondary fibers cross sides and then move up
Solitary tract
Visceral (taste, touch) and general sensation from pharynx; consists of first order neurons from CN VII, IX, and X
Spinothalamic tract
P & T fibers from the contralateral body; cell bodies located in dorsal horn (substantia gelatinosa); axons terminate in ventral posterior lateral (VPL) thalamic nucleus
Where do primary pain and temperature neurons synapse in the spinal cord?
substantia gelatinosa
What is the only example of a pseudounipolar nucleus in the CNS
mesencephalic V nucleus
