Bio_1A_Lecture_26_NervousSystem

Bio_1A_Lecture_26_NervousSystem - The Central Nervous...

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Unformatted text preview: The Central Nervous System Andreas Vesalius(1514-1564) Cnidarian (hydra) Platyhelminthes (planaria) Arthropoda (insect) extensive fusanglia in head & ventral nerve cord Some Nervous Systems in Invertebrates Evolution of the Vertebrate Brain Human Porpoise The Mammalian Nervous System Consists of several main branches: Central Nervous System Peripheral Nervous System Autonomic Nervous System The Central Nervous System (CNS) consists of the brain & spinal cord The Peripheral Nervous System (PNS) includes the sensory and motor nerves that help us interact with the external world. Serves many ! vegetative " body functions Most regulatory centers in the hypothalamus two branches Neurotransmitter: Acetylcholine Neurotransmitter: Nor-Epinephrine The Autonomic Nervous System PARASYMPATHETIC DIVISION SYMPATHETIC DIVISION Knee jerk reflex (monosynaptic) Flexion reflex (several synapses) Spinal Reflexes (integration outside of the brain) Cerebrum Hypothalamus Pituitary gland Forebrain Cerebral cortex Hindbrain Pons Medulla oblongata Cerebellum Spinal cord Major structures of the human brain Functional areas of the Cerebral Cortex...
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This note was uploaded on 10/29/2009 for the course BIO biology taught by Professor Meighan during the Fall '09 term at Berkeley.

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Bio_1A_Lecture_26_NervousSystem - The Central Nervous...

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