Notes - b) Hypothalamus involved in sleep, eating behaviors...

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1/21/2010 – Structure of the Central Nervous System Central Nervous System: consist of the brain and spinal cord below: inferior, hypo- Directional Terminology dorsal (superior) / ventral (inferior) medial (middle) / lateral (side) rostral (anterior) / caudal (posterior) ipsilateral / contralateral The Spinal Cord 1. gray matter (middle) surrounded by white matter 2. incoming sensory nerves, outgoing motor nerves The Major Structures of the Mammalian Brain 1. Hindbrain (back brain): all animals has a hindbrain. a) Medulla – basic body regulatory functions b) Pons – sleep, attention, muscle tone c) Cerebellum – balance, coordination, timing 2. Midbrain a) Substantia nigra – involved in movement (Parkinson's Disease) b) superior colliculus – visual system – saccadic eye movements c) inferior colliculus – auditory system – sound localization 3. Forebrain a) Thalamus – relays sensory information to the cortex
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Unformatted text preview: b) Hypothalamus involved in sleep, eating behaviors and control of body temperature c) Pituitary gland produces and controls hormones d) Limbic system a set of forebrain structures, involved in emotion and memory e) Basal ganglia movement initiation 4. Ventricles filled with cerebrospinal fluid (CSF) 5. Cerebral Cortex six layers a) Occipital lobe visual processing b) Parietal lobe proprioception, memory c) Temporal lobe memory, emotion, hearing d) Frontal lobe movement, memory, personality The Blood-Brain Barrier 1. Protects the brain from substances carried in the blood 2. What gets in? a) Small, uncharged molecules (ex = oxygen & carbon dioxide) b) Fat-soluble molecules (ex = drugs) 3. Active transport a) requires energy b) glucose, amino acids, vitamins, hormones...
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Notes - b) Hypothalamus involved in sleep, eating behaviors...

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