front 1 central nervous system | back 1 the brain and spinal cord |
front 2 peripheral nervous system | back 2 nerves that connect the CNS with the rest of the body |
front 3 the nervous system performs three general functions | back 3 (1) sensory function - sense (2) integrative function - figure it out (3) motor function - fix it |
front 4 neuroglia or glial | back 4 support, insulate, nourish, and care for delicate neurons |
front 5 they DO NOT conduct glial cell | back 5 neuroglia |
front 6 Most abundent glial cell | back 6 Astrocytes |
front 7 most important in the transmission of information | back 7 neuron |
front 8 nonmitotic | back 8 DO NOT replicate when injured |
front 9 myelin | back 9 fatty material that encases most of the nerve fiber |
front 10 sensory neuron | back 10 carries information from the periphery |
front 11 motor neuron | back 11 makes you move |
front 12 interneuron | back 12 between sensation and motor neurons. they play a role in thinking, learning, and memory |
front 13 saltatory conduction | back 13 nerve impulse "jumping" from node to node |
front 14 organism most associated with saltatory conduction | back 14 kangaroo |
front 15 primary source of energy for the brain | back 15 glucose |
front 16 low blood glucose levels result in | back 16 hypoglycemia |
front 17 the grooves that separate the gyri | back 17 sulci |
front 18 dopamine | back 18 largely responsible for the activity of the basal nuclei |
front 19 action potential | back 19 a process of polarization, depolarization, and repolarization |
front 20 polarization | back 20 the resting state of a neuron. no nerve impulse is being transmitted. the cell is quiet |
front 21 depolarizatin | back 21 the neuron is stimulated a change occurs in the cells electrical state |
front 22 depolarization | back 22 cell returning to its resting place. unless the cell repolarizes. it cannot be stimulated again |
front 23 refractory period | back 23 the cells unresponsive period |
front 24 the phases of the nerve impulse are caused by | back 24 the movement of ions, particularly Na+ and K+ |
front 25 the brain is divided into four major areas | back 25 the cerebrum, the diencephalon, the brain stem, and the cerebellum |
front 26 parietal lobe | back 26 located behind the central sulcus primarily concerned with receiving general sensory information from the body also concerned with reading, speech, and taste |
front 27 medulla oblongata | back 27 often called the vital center because it controls heart rate, bp, and respiratory always assess the respiratory rate before administering a narcotic, if less than 10 do NOT administer |
front 28 cerebellum | back 28 damage to the cerebellum produces jerky muscle movements, staggering gait, and difficultly maintaining balance or equilibrium |
front 29 limbic system | back 29 functions in emotional states and behavior |
front 30 reticular formation | back 30 concerned with the sleep-wake cycle and consciousness |