Lecture 2 - Lecture 2 Structure of the Nervous System 1 2...

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Unformatted text preview: Lecture 2 Structure of the Nervous System 1 2 Central Nervous System (CNS)- encased in bone- major divisions are Brain (skull) Spinal Cord (vertebrae)- integration of information & generating commands 2 Central Nervous System (CNS)- encased in bone- major divisions are Brain (skull) Spinal Cord (vertebrae)- integration of information & generating commands 2 Peripheral Nervous System (PNS)- all the nerves outside the CNS- conveys signals between the body and the CNS- major divisions are Somatic PNS: skin, joints, voluntary muscles Autonomic Nervous System (ANS): organs, blood vessels, glands 3 4 Autonomic Nervous System Sympathetic NS excitement, danger Parasympathetic NS calm, vegetative 4 5 Rostral Dorsal or Caudal? Ventral or Caudal? 5 Superior View Gyrus = fold Sulcus = fissure Anterior Posterior 6 7 Posterior Anterior Superior Inferior Lateral View of the Brain 7 Medial View of the Brain Anterior Superior Inferior Posterior 8 9 10 11 12 Ventricles filled with cerebrospinal fluid (CSF) 12 13 13 14 Hydrocephalus Water on the brain 14 Clinical Picture Brain of a white-collar worker Lionel Feuillet, Henry Dufour, Jean Pelletier A 44-year-old man presented with a 2-week history of mild left leg weakness. At the age of 6 months, he had undergone a ventriculoatrial shunt, because of postnatal hydrocephalus of unknown cause. When he was 14 years old, he developed ataxia and paresis of the left leg, which...
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Lecture 2 - Lecture 2 Structure of the Nervous System 1 2...

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