study for chapter 8 nervous system
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Thalmus function | superior to hypothalmus and inferior to cerebrum. controls sensory impulses (except smell.)
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| Frontal lobe function | voluntary movement motor area to control movement
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| effects of sympathetic response | dominate in stressful situations, heart rate increases, vasodilation in skeletal muscles, bronchioles dialate, liver changes glycogen to glucose, digestive secretions decrease, peristalsis slows, vasoconstriction in skin
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| neurotransmitters | enables nerve impulses to cross synapses
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| cranial nerve I | olfactory-smell
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| cranial nerve II | optic-sight
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| cranial nerve III | Oculometer-movement of eyeball
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| cranial nerve IV | trochler-movement of eyeball
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| cranial nerve V | trigreminal-sensation in face, scalp, and teeth, contraction of chewing muscles
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| cranial nerve VI | abducens-movement of eyeball
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| cranial nerve VII | facial-sense of taste, contraction of facial muscles, secretion of saliva
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| cranial nerve VIII | acoustic or vestibulocohlear- hearing or equilibrim
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| cranial nerve IX | glossopharyngeal- sense of taste, sensory for cardiac, respiratory, bp reflexes, contraction of pharynx, secretion of saliva
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| cranial nerve X | vagus-sensory in cardiac, respiratory, bp reflexes, sensory and motor to larynx, decreases heart rate, contraction of alimentary tube, increases digestive secretions
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| cranial nerve XI | accessory- contraction of neck and motor to larynx (speaking)
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| cranial nerve XII | hypoglossal- movement of tongue
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| cerebrum function | movement, sensation, learning, memory
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| function of nervous system | to detect change and feel sensation, initiate appropriate responses to change, organize info for immediate use and store for future use
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| neuron anatomy | cell body, dedrites, axon, schwann cells, myelin sheath, neurolemma
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| interneuron | entirely within the cns- carries only sensory or motor impulses or to integrate these functions
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| reflex arc | pathway nerve impulses travel when a reflex is elicited
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| 5 essential parts of a reflex arc | receptors, sensory neurons, cns,motor neurons, effector
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| outermost layer of meninges | fibrous connective tissue called dura mater
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| connection for the cerebral hemisphere | corpus callosum-band of nerve fibers that connects right and left cerebral hemisphere
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| cerebrum lobes | frontal,parietal,temporal,occipital
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| frontal lobes | voluntary movement
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| parietal lobes | sensory
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| temporal | smell
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| occipital | visual , thinking
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| myelin producing cells | schwann cells, oligodendrocytes,neuroglia(glia cells) microglia, astrocyte
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| blood brain barrier | prevents potentially harmful waste products in the blood from diffusing out in to brain tissue
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| synaptic transmission | small gap or pace between the axon and neuron and the dendrites or cell body of the next neuron is the synapse. transmission is carried from 1 to the next by neurotransmitter . a chemical inactivator is use to prevent unwanted continuous impulses
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| Nueron insulator | schwann cells,myelin sheaths
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| cerebellum function | movement
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| neuron efferent | sensory
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| neuron afferent | motor
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| chemical impulse occurs at | synapse
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| electrical impulse occurs at | neurons
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| white matter | made of myelinated axons and dendrites of interneurons
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| cerebral spinal fluid and anatomy | in the central canal and is continuous with cavities in the brain called ventricles. works as an insulator
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| division of nervous systems | central, peripheral(including autonomic)
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| mixed nerve | contains both sensory and motor neurons. most of peripheral nerves are mixed nerves(sciatic)
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| patellar reflex | knee jerk-tap on patellar tendon just below the knee cap causes extension of the lower leg. this is a stretch reflex
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| thalmus | is superior to the hypothalmus and inferior to the cerebrum. the third ventricle is a narrow cavity that passes through both thalmus and hypothalmus. functions are concerned with sensation.
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| frontal lobe function | motor area that generates impulses for voluntary movement of hands and face.
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