Bio Study Guide

Bio Study Guide - Peripheral Nervous System: Sensory and...

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Peripheral Nervous System: Sensory and Motor Neurons Sensory Neurons: Neurons that transmit information from the periphery to the CNS. Motor Neurons: Neurons that transmit information from the CNS to the periphery. Spinal Cord Sections: Cervical: head neck and shoulders Thoracic: back, abdomen and thorax Lumbar: lower limbs, pelvis, external genitalia Sacral: thighs, buttocks, anus, legs and feet Vagus Nerve: cranial nerve that passes through the mid-brain, thorax and abdomen, regulates vital functions such as heart rate and stomach acid formation. Vestibulocochlear nerve: Hearing and balance Vagus nerve: aortic blood pressure, heart rate, stomach acid secretion and taste Central Nervous System: Brain: Cerebral cortex, brainstem, and cerebellum Cerebral cortex lobes: Frontal, Parietal, Temporal and Occipital Brainstem: life support system of the brain, regulates breathing, heart rate and blood pressure, connects brain to spinal cord. Cerebellum: balance and coordination Autonomic System: Sympathetic and Parasympathetic division Sympathetic System: Flight or Fight response Cell body of a neuron: contains nucleus, an endoplasmic reticulum and golgi apparatus Dendrites: at the cell body, receive information from other nurons Axon: extends from the cell body, conducts electrical signals to the synapse where another neuron is met. Glia: outnumber neurons 3-1, “supportive cells” Types of Glia: astrocytes, microglia, oligodendrocytes Astrocytes: maintain proper chemical environment Microglia: immune cells that remove debris and secrete inflammatory mediators
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This note was uploaded on 04/09/2008 for the course BIOL 100 taught by Professor Lee during the Fall '07 term at San Diego State.

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Bio Study Guide - Peripheral Nervous System: Sensory and...

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