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27329070 anatomy of the brain and spinal cord

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CRANIAL NERVES & MOTOR SYSTEM
LIFE CONTROL MODULE, WEEK FOUR
ANATOMY SPECIFIC LEARNING OBJECTIVES
Following this session, student should
1. Identify all 12 cranial nerves
2. Describe the function, origin, course, and passage through skull for all 12 cranial nerves
3. Identify internal brainstem anatomy relevant to the cranial nerves
4. Identify and describe elements of the motor system (motor areas of the cerebral cortex, thalamus,
brainstem and spinal cord)
5. Identify major parts of a typical spinal nerve, and what types of fibres (sensory, motor or both) are
carried in each part.
PRACTICAL EXERCISES
Gross Anatomy
Firstly, review the anatomy of the brainstem.
Identify parts of the brainstem on an isolated brainstem specimen or model. On a medial view of the brain,
identify the main components of the brainstem.
What is the order of these components from cranial to caudal end?
Moving to the pons, look at a specimen with the cerebellum removed.
Identify the floor of the fourth ventricle.
Identify the facial colliculus, the vagal and the hypoglossal triangles(all in the floor of the 4th ventricle).
Look at a specimen of the medulla oblongata.
Find the gracile and cuneate tubercles, the pyramids and the olives.
Identify the central canal passing out of the medulla oblongata into the spinal cord.
Examine the brainstem in a whole brain or brain model
On a whole brain, how much of the midbrain is visible?
What structures can you see?
On a dorsal aspect of the midbrain, identify the four colliculi.
On the ventral surface, identify the cerebral peduncles. Note the interpeduncular fossa.
CRANIAL NERVES
Examine skulls + brains with good ventral surfaces to enable you to identify the 12 pairs of cranial nerves

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