KAAP309 Study Guide - Midterm Guide: Extracellular Fluid, Oligodendrocyte, Resting Potential
20 May 2016
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Document Summary
Central nervous system: brain & spinal cord. Peripheral nervous system: afferent (sensory) & efferent (motor: sensory (afferent) Somatic afferent convey impulses from skin, skeletal muscles, and joints. 2: motor part of pns: somatic & autonomic. Somatic (voluntary): innervates skeletal muscle; mostly conscious control. Autonomic (involuntary): innervates smooth muscle, cardiac muscle, glands; Neurons: long lived, excitable, high metabolic rate, amitotic (non-mitotic, transmit electrical signals and cell to cell interactions during development. Neuron parts: dendrites (inputs, soma cell body. 3 well developed golgi apparatus and rough er. Axon hillock cone shaped area from which axon arises. Clusters of cell bodies are called nuclei in cns and ganglia in pns. 5: axon (output) one axon per cell arising from the axon hillock. Secretory region of neuron, release neurotransmitters to excite or inhibit other cells. Generates and transmits nerve impulses (action potentials) away from the cell body.
