Neuro Lab 2

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Anonymous
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103501
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Neuro Lab 2
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2011-09-21 23:16:43
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Neuroanatomy
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  1. Anterior Lobe
    Regulates unconscious proprioception.
  2. Posterior Lobe
    “Neocerebellum”-It mediates fine motor coordination.
  3. Flocculonodular Lobe
    vestibulocerebellum
  4. Vermis
    Joins the cerebellar hemispheres; site of termination of the spinocerebellar tracts.
  5. Primary Fissure
    Divides the cerebellum into anterior and posterior parts.
  6. Horizontal fissure
    It divides the cerebellum into superior and inferior parts.
  7. Superior Medullary Velum
    White matter lamina that acts as the roof of the IV Ventricle.
  8. Superior Cerebellar Peduncles (SCP)
    “Brachium Conjunctivum”- carry bundle of fibers from midbrain and pons to the cerebellum.
  9. Middle Cerebellar Peduncles (MCP)
    “Brachium Pontis”- carry fibers mostly from pons to the cerebellum.
  10. Inferior Cerebellar Peduncles (ICP)
    “Restiform Body”- carry fibers from the medulla and spinal cord to the cerebellum.
  11. Cerebellar Nuclei
    Receive input from the cerebellar cortex and they represent the output of the cerebellum.
  12. Arbor Vitae
    Arrangement of cerebellar gray and white matter.
  13. Corpora Quadrigemina
    • Located in the tectum of the midbrain; formed by 4 colliculi. The Superior Colliculus receives visual input and is involved in ocular motor control. The Inferior Colliculus receives auditory input from the brain stem and auditory cortex.
    • The brachia connects the colliculi with the thalamus.
  14. C.N. IV
    purely motor; supplies the Superior Oblique muscle.
  15. Crus Cerebri
    Located anterior to cerebral peduncles; contains motor tracts.
  16. Interpeduncular Fossa
    Space between the cerebral peduncles; C.N. III emerges from it.
  17. C.N. III
    Motor fibers supply Levator Palpebrae Superiori, Inferior Rectus, Medial Rectus, Superior Rectus, and Inferior Oblique. It also has parasympathetic fibers that control pupillary constriction and lens accommodation.
  18. Pons
    Contain multiple nuclei that regulate sensory and motor innervation to the face; involved in breathing, swallowing, auditory input, balance, sleep/consciousness.
  19. C.N. V
    Mixed nerve; sensory fibers supply the face, motor fibers supply muscles of mastication.
  20. Dorsal Median Sulcus
    Posterior groove in closed medulla.
  21. Medial Eminence
    Elevation in the Rhomboid fossa.
  22. Facial Colliculus
    Dorsal elevation formed by the facial nerve looping around the abducens nerve inside the pons.
  23. Vestibular Area
    Dorsal elevation formed by the presence of the vestibular nuclei inside the pons.
  24. Stria Medullares
    Portion of C.N. VIII that crosses the acoustic area.
  25. Sulcus Limitans
    Marks the lateral boundary of the Rhomboid fossa in proximity of the locus ceruleus.
  26. Pontomedullary Junction
    Fissure marking the separation of the pons from the medulla oblongata; point of exit of Cranial Nerves VI, VII and VIII.
  27. C.N. VI
    Motor nerve; supplies Lateral Rectus.
  28. C.N. VII
    Mixed nerve; motor innervation for muscles of facial expression and branchiomeric muscles; taste on anterior 2/3 of tongue; supplies sublingual, submandibular and lacrimal glands.
  29. C.N. VIII
    Sensory; Auditory and Vestibular sensory input.
  30. C.N. IX
    Mixed; contributes to pharyngeal plexus; posterior 1/3 of tongue for taste; carotid sinus; parotid gland.
  31. C.N. X
    Mixed; Parasympathetic innervations to organs from neck to transverse colon; motor to laryngeal mm, pharyngeal constrictors, other oral cavity mm (Levator veli palatini, Salpingopharyngeus, Palatoglossus, Palatopharyngeus).
  32. C.N. XI
    Spinal branch supplies Sternocleidomastoid and Trapezius; Cranial branch join vagal plexi.
  33. C.N. XII
    Supplies intrinsic and extrinsic muscles of the tongue (except for Palatoglossus).
  34. Pyramid
    Elevations located in the superoanterior aspect of the medulla; site of corticospinal tract decussation.
  35. Olive
    Elevations located lateral to the pyramids; involved in control of movement.
  36. Cuneate tubercle and fasciculus
    Part of Dorsal Column System; Carries proprioception and touch from upper body.
  37. Gracile tubercle and fasciculus
    Part of Dorsal Column System; Carries proprioception and touch from lower body.
  38. Vagal Trigone
    Eminence in the Rhomboid Fossa formed by C.N. X.
  39. Hypoglossal Trigone
    Eminence in the Rhomboid Fossa formed by C.N. XII.
  40. Obex
    Most inferior point of the IV Ventricle as it becomes the central canal.
  41. Dorsal Median Sulcus
    Shallow groove located in posterior closed medulla.

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