BIO 183-2 f08 - II. Nervous system II. Nervous system A....

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Unformatted text preview: II. Nervous system II. Nervous system A. Overview 1. General characteristics-Very complex &organized II. Nervous system A. Overview 1. General characteristics-Very complex &Very organized Function: Control-process & transmit information 2. Divisions (2) a. Central nervous system (CNS) 2. Divisions (2) a. Central nervous system (CNS) b. Peripheral nervous system (PNS) II. Nervous system E. Peripheral nervous system Contents:- 31 pairs of spinal nerves II. Nervous system E. Peripheral nervous system Contents:- 31 pairs of spinal nerves-12 pairs of cranial nerves II. Nervous system E. Peripheral nervous system Contents:- 31 pairs of spinal nerves-12 pairs of cranial nerves- Associated ganglion (cell bodies)- Associated ganglion (cell bodies) Function: Carry information from receptors or to effectors to/from CNS See Handout- Associated ganglion (cell bodies) Function: Carry information from receptors or to effectors to/from CNS *** All spinal nerves contain GSE, GSA, GVE, GVA fibers Carry information from receptors or to effectors to/from CNS *** All spinal nerves contain GSE, GSA, GVE, GVA fibers * SSA, SVA, SVE- only found in cranial nerves 1. General characteristics * SSA, SVA, SVE- only found in cranial nerves 1. General characteristics Coverings * SSA, SVA, SVE- only found in cranial nerves 1. General characteristics Coverings 2. Spinal nerves Created by union of dorsal (sensory) & ventral (motor) root 2. Spinal nerves Created by union of dorsal (sensory) & ventral (motor) root- 31 pairs: C1-C8 T1-T12 L1-L5 S1-S5 C0 2. Spinal nerves Created by union of dorsal (sensory) & ventral (motor) root- 31 pairs: C1-C8 T1-T12 L1-L5 S1-S5 C0- Each only innervate specific regions of skin: Dermatomes- Each only innervate specific regions of skin: Dermatomes- Collection of nerves create: Plexuses 4 Major:- Each only innervate specific regions of skin: Dermatomes- Collection of nerves create: Plexuses 4 Major: a. Cervical Plexus Plexuses 4 Major: a. Cervical Plexus (C1-5) Nerves (2): - Ansa cervicalis (C1-3): Muscle of the anterior triangle of neck- Phrenic (C3-5): T. Diaphragm Plexuses 4 Major: a. Cervical Plexus (C1-5) Nerves (2): - Ansa cervicalis (C1-3): Muscle of the anterior triangle of neck-Phrenic (C3-5): T. Diaphragm b. Brachial Plexus (C5-T1) See Handout- Ansa cervicalis (C1-3): Muscle of the anterior triangle of neck-Phrenic (C3-5): T. Diaphragm b. Brachial Plexus (C5-T1) See handout c. T1- T12- Intercostal nerves (found in intercostal spaces) d. Lumbar & Sacral plexus c. T1- T12- Intercostal nerves (found in intercostal spaces) d. Lumbar plexus (T12-L4) c. T1- T12- Intercostal nerves (found in intercostal spaces) d. Lumbar plexus (T12-L4) Compartments: Abdominal: Iliohypogastric n. c. T1- T12- Intercostal nerves (found in intercostal spaces) d. Lumbar plexus (T12-L4) Compartments: Abdominal: Iliohypogastric n....
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BIO 183-2 f08 - II. Nervous system II. Nervous system A....

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