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dr. fuh
exam2 ch9-18
| Question | Answer |
|---|---|
| how many cranial nerves exist in the SNS? | 0 |
| Bob has had a stroke. The MRI given to you will most likely show a stroke at which blood vessel in the brain? | middle cerebral artery |
| the lumbar enlargement of the spinal cord contains how many lumbar nerves? | 0 |
| The cerebral spinal flued of the lateral ventricles flows into the? | 3rd ventricle and foraman of morrow |
| choose all that are true about the peripheral nervous system? | the PNS includes autonomic and somatic |
| of the menegies which one is the inner most later? | pia mater |
| what is a ganglion | a cell body..... part of PNS |
| what is a myelin | a schuann..... part of PNS |
| is a nerve PNS or CNS? | PNS and CNS |
| is afferents and ascending PNS or CNS? | PNS |
| is sensory PNS or CNS? | PNS |
| is unipolar PNS or CNS? | PNS |
| is root/rootlet PNS or CNS? | PNS |
| is Nuclei PNS or CNS? | CNS |
| is interfusicular oligodendrocyte PNS or CNS? | CNS |
| is nerve fiber PNS or CNS? | CNS and PNS |
| is efferent and descending PNS or CNS? | CNS |
| is mortor PNS or CNS? | CNS |
| is multipolar PNS or CNS? | CNS |
| specific anatomy or parasympathetic(PNS) | a long pregangleonic then a short postganglionic neuron |
| features/characteristics of PNS? | rest/relaxation, specific 1 action=accurate system |
| features/characteristics of CNS? | fight and flight, non specific=spray and pray |
| what are characteristics of gracilis cuneatus? | proprioprioception, sensory, vibration, touch, 1psilateral |
| what are characteristics of spinothialamic tract | contralateral(cross over), sensory, pain, temperature |
| are astrocytes the most numerous? true or false? | true, astrocytes are the most numerous. |
| what dominant role do astrocytes play? | they form "scar-like" tissue following CNS injury |
| neuron process? | extension of the neuron |
| dendrite? | sends neuron impulse to cell body |
| Axon? | sends impulse away from cell body to synapse |
| this oat wroaps around groups of fibers (fasciculi). it is the most elastic of the mesodermal covers and is continuous with the pia and arachnoid maters as it approaches the CNS structures? | Perineurium |
| the epineurium is the highly collagenous outer coat of a nerve. It is virtually inelastic and adds protection, strength and support the fasciculi within. It is continuous with the dura mater as it approaches the CNS structures? | Epineurium |
| if a neuron is damaged(cut, chemically treated, etc.) will it divide? | no; at least not on any measurable scale |
| if a neuron is damaged, will it regenerate a lost or damaged part? | it may; it depends on the extent of damage, the placement of the injury on the neuron and importantly if it was in the CNS or PNS. |
| if one neuron in a series degenerates, do the neurons that follow also degenerate? | typically, no; however, in some visual and auditory pathways transneuronal degeneration can occur. |
| what is the rate of regeneration in the PNS usually in the range of? | 1-4 mm/day |
| name the 3 acessory structures? | pia matter, Arachnoid mater, dura |
| what does arachnoid trabeculae do? | aid in maintaining shape |
| what side does the superior sagittal drain to? | it drains to the right transverse |
| what side does the inferior sagittal drain to | straight drain to the left transverse |
| gracilis and cuneatus characteristics? | -both are ipsilateral fibers. - both cause conscious proprioception, the ability to perceive consciously the position and movement of the body parts. - discrimination in touch (two points) and vibratory sensations |
| example of gracilis and cueatus? | do you know the position of your left big toe without looking |
| characteristics of gracilis? | starts at all cord levels, ipsilateral fivers, cause conscious proprioception |
| characteristics of cuneatus? | ipsilateral fibers, starts at T5 or T6, cause conscious proprioception |
| characteristics of spinothalamic tract? | at the anterior and lateral funiculi border, -found at all levels, -functions in pain and termal input and light touch, -controlateral fibers, -fibers terminate in the thalamus, -clinically lesions here lead to pain loss and temperature loss. |
| what area of the brain would you cut to help with parkansons for about 10years? | globus pallidus interna |
| general functions of prosencephalon? | 1. most significant relay center for sensory input to the cerebrum. 2.integrative and relay. 3. center for autonomic and edocrine functions |
| what two things does the epithalamus have? | pineal gland and posterior commissure |
| what does the pineal gland control? | norepinephrin, seratonin, and melatonin |
| what does the thalamus carry? | carries all sensory except olfaction |
| what divisions are in the anterior area of the hypothalamus? | supraotic nuclei, paraventricular nuclei, anterior nucleus, preoptic area |
| what does supraoptic nuclei secrete? | secretes antidiaretic hormone |
| what divisions are in the posterior area of the hypothalamus? | mammilary bodies, posterior nuclei |
| parietal lobe controls? | sensory, unipolar neurons travel here |
| occipital lobe controls? | visual cortex |
| forebrain(frontal lobe) controls? | motor output, thinking, multineuro, cortical spinal tract |
| temporal lobe controls? | smell, hearing |
| neostraiatum is made up of what two things? | caudate nucleus, putamen nucleus |
| corpus striatum is made up of what? | caudate nucleus, putamen nucleus, globus pallidus |
| caudate and putamen have what function? | movement that occure between the time and decision is made to "start" and the "stop" order is given |
| claustrum and amygdaloid body have what function? | plays a role in subconscious processing of visual information |
Created by:
liz_2185
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