Notes - b Hypothalamus – involved in sleep eating...

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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...

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