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Chapter41 neur - Neural Regulation Chapter 41 Nervous System Evolution Radially symmetrical Radial NS with interconnected neurons and no central

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Neural Regulation Chapter 41
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Nervous System Evolution Radially symmetrical: Radial NS with interconnected neurons and no central control organ Bilaterally Symmetrical: Nerve cell concentration (ganglia) with specialization afferent, efferent nerves connect effector organ or muscle
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Protostomes: Annelids and Arthropods (Fig 41-3) Planarian Flatworms (Fig 41-2) Planarian Flatworms (Fig 41-2)
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Protostomes: Cephalopod Mollusks Includes octopods and squids highly developed nervous systems for adaptation to active life style
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Deuterostomes: Vertebrates Fig 41-4 Central Nervous System (CNS) Peripheral Nervous System : Somatic Autonomic E A A E
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Summary - Development of Vertebrate Nervous System Fig 41-5 The mesencephalon (midbrain), pons and medulla oblongata make up the brain stem (stalk holding up cerebrum) http://people.eku.edu/ritchisong/3 01images/Brain_stem.jpg
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Vertebrate Brain Evolution Fig 41-6 Evolutionary trends: shark – amphibian – reptile – bird – mammal
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This note was uploaded on 03/08/2011 for the course BIO 119 taught by Professor Transue during the Spring '09 term at Rutgers.

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Chapter41 neur - Neural Regulation Chapter 41 Nervous System Evolution Radially symmetrical Radial NS with interconnected neurons and no central

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