Anat321demoreview Lab 1 2009
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Anat321demoreview Lab 1 2009

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Second hour of ANAT 321 lab 1 - to be run though with the lab demonstrator

Second hour of ANAT 321 lab 1 - to be run though with the lab demonstrator

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Anat321demoreview Lab 1 2009 Anat321demoreview Lab 1 2009 Presentation Transcript

  • ANAT 321 REVIEW LABORATORY 1 NEUROANATOMY LAB
  • BRAINSTEM VENTRAL VIEW MIDBRAIN medulla pons midbrain
  • BRAINSTEM VENTRAL VIEW MIDBRAIN medulla pons midbrain Cerebral peduncle CN 3 CN 5 CN 6 Pyramid CN 9 CN 8 CN 7 CN 10 Inferior olive
  • REVIEW: LAB 1
    • Question
      • What structure lies lateral to the pyramids?
    • Answer
      • The inferior olive
  • REVIEW: LAB 1
    • Question
      • What cranial nerve exits ventrally between the cerebral peduncles?
    • Answer
      • Cranial nerve 3
  • BRAINSTEM DORSAL VIEW w / out cerebellum
  • BRAINSTEM DORSAL VIEW w / out cerebellum Superior colliculus Middle cerebellar peduncle Inferior cerebellar peduncle Nucleus gracilis Nucleus cuneatus 4 th ventricle inferior colliculus
  • REVIEW: LAB 1
    • Question
      • Which cranial nerve lies between the pyramids and the inferior olives?
    • Answer
      • CN 12
  • REVIEW: LAB 1
    • Question
      • What is the relationship between the cerebral peduncles and the pyramids?
    • Answer
      • The pyramids comprise the corticospinal fibres which are a white matter fibre pathway originating in the motor cortices. The fibres course through the internal capsule and then funnel down into the cerebral peduncles and then through the medulla.
  • REVIEW: LAB 1
    • Question
      • Why are the cerebral peduncles larger than the pyramids?
    • Answer
      • There are more fibre tracts in the cerebral peduncles
  • REVIEW: LAB1
    • Be sure that you understand the structure of the ventricular system in the medulla, pons, & midbrain
    • Answer
      • Ventricles are spaces in the brain filled with cerebral spinal fluid (CSF)
  • REVIEW: LAB 1
      • Ventricles are spaces in the brain filled with cerebral spinal fluid (CSF)
    anterior posterior
  • REVIEW: LAB 1
    • There are two lateral ventricles found in both cerebral hemispheres
    Lateral ventricles
  • REVIEW: LAB 1
    • The walls of the third ventricle are formed by the thalamus
  • REVIEW: LAB 1
    • CSF flows from the third ventricle through the midbrain to the fourth ventricle by the cerebral aqueduct
  • REVIEW: LAB 1
    • The fourth ventricle is located dorsal to the pons and medulla
  • REVIEW: LAB 1
    • Be sure that you understand the relationship of the cerebellum to the 4th ventricle and to the medulla and pons.
    • Answer
      • The cerebellum forms the roof of the 4th ventricle
  • REVIEW: LAB 1
    • Be sure that you understand the relationship of the cerebellum to the 4th ventricle and to the medulla and pons.
    • Answer
      • The cerebellum is attached to the pons through the middle cerebellar peduncles and the medulla by the inferior cerebellar peduncles
  • QUIZ
  • A B C D
  • Answer Key
      • A: cerebral peduncle
      • B: CN5
      • C:CN6
      • D: pyramid
  • A B C D E
  • Answer Key
      • A: superior colliculus
      • B: inferior colliculus
      • C: middle cerebellar peduncle
      • D: nucleus gracilis
      • E: fourth ventricle
  • A B C D E
  • Answer Key
      • A: pons
      • B: CN8
      • C: CN12
      • D: inferior olive
      • E: CN7