Brainstem.docx

2 Pages
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Department
Anatomy and Cell Biology
Course Code
Anatomy and Cell Biology 3319
Professor
Kem Rogers

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Description
Brainstem & Cerebellum • Reticular formation – spread out throughout the white matter, important for gross motor control & autonomic functions • Cerebral aqueduct – connects third & fourth ventricle, splits midbrain • Medulla is continuous with first thoracic segment of the spinal cord th • 4 ventricle sits on the dorsal surface – separates cerebellum from brainstem • Cerebral penducles – ventral surface of the • Mammillary bodies – part of the hypothalamus • Caudal direction – ventral surface of the pons o Cranial nerves entering & exiting starting at the junction of midbrain/pons o Cranial nerves also in pons & junction of pons/medulla • Vertical fibres in – cerebral peduncle – information coming from cerebral cortex (primarily for motor function) – terminates some in brainstem & some in spinal cord • Horizontal fibres - connect with cerebellum • Medulla – vertical fibres – continuation of fibres in cerebral peduncle that don’t terminate in pons o Cortical spinal fibres – pyramid • Pyramidal
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