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Gross Anatomy of the CNS

Gross Anatomy of the CNS. S.J. Potashner sjp9713@neuron.uchc.edu. The nervous system has distinct areas that are specialized for different ( sub)functions.

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Gross Anatomy of the CNS

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  1. Gross Anatomy of the CNS S.J. Potashner sjp9713@neuron.uchc.edu

  2. The nervous system has distinct areas that are specialized for different (sub)functions. The distinct functional areas have different locations inside the nervous system, and they interact by signaling to one another along networks of cells. These components are organized into sub-systems (usually called ‘systems’) each of which performs specific functions. Many of these ‘systems’ span the length of the nervous system.

  3. GOALS Learn some language of gross anatomy Learn the major subdivisions of the nervous system Recognize the cardinal features of each subdivision Learn the entry/exit points of the peripheral nerves

  4. Anatomic Taxonomy

  5. Anatomical Planes Terms of Direction Median Sagittal Frontal Coronal Medial Lateral Ipsilateral Contralateral Anterior, Rostral Posterior, Caudal Ventral Dorsal Horizontal Axial Superior, Rostral, Cranial Inferior, Caudal

  6. Dorsal Terms of Direction Rostral Caudal Ventral Superior Rostral Caudal Inferior Dorsal Ventral Caudal

  7. Human CNS Subdivisions Cerebrum Spinal cord

  8. Rat CNS Subdivisions Cerebrum Cerebellum Spinal cord Thalamus Pons Medulla Midbrain Cerebrum

  9. Surface Features: Lateral Cerebrum Longitudinal fissure Rostral Central sulcus Parietal lobe Caudal Frontal lobe Occipital lobe Caudal Rostral Temporal lobe Lateral fissure Preoccipital notch

  10. Surface Features: Medial Cerebrum Rostral Central sulcus Cingulate sulcus Parieto-occipital sulcus Frontal lobe Caudal Parietal lobe Occipital lobe Rostral Caudal Temporal lobe

  11. Surface Features: Thalamus Dorsal thalamus Hypothalamic sulcus Hypothalamus Optic nerve

  12. Surface Features: Midbrain Aqueduct Oculomotor nerve Cerebral peduncle Superior colliculus Inferior colliculus

  13. Surface Features: Pons Pontine protuberance Cerebellum

  14. Surface Features: Medulla

  15. Olfactory bulb Frontal lobe Olfactory tract Lateral fissure Temporal lobe Th Mi Pons Med Surface Features: Ventral Brain Stem Cerebellum

  16. Spinal Cord Vertebral levels Spinal levels

  17. Surface Features: Spinal Cord

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