Superficial sensation n of mesencephaliscus pathway

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(superficial sensation) -n. of mesencephaliscus pathway (complex sensation) 1 motor nuclei in pons (in. Mm of mastications) Nerve consist of 3 division: opthalamic,maxilarry,mandibular V1-conduct sensory impulses from- nose,forehead,upper eyelid, conjuctiva cornea, V2-nasal mucosa,gums,cheek,upper lip V3-tongue,lower,jaw,teeth V1-enter cranium via-fissura orbitalis superior V2-foramen rotundum>trigeminal ganglion V3-foramen ovale>trigeminal ganglion Examination:-ask patient to chew & close & open mounth (palpate masticatory mm.) move lower jaw in different direction-recording of disorders -palpation of foreamen when nerves leaves (pain sensation? Pathology: Optic Nerve -visual analyzer,formed of axons of ganglionic cells of retina Neuron enter through canalis opticus>optic chiasma>X>midbrain>thalamus>sup erior calliculi of tectum Gyrus lingualis curves-projection of upper visual field Examination: -perimetria-measurment of visual fields -fundoscopy-examination of retina -edema of optical disc-increase intracranial pressure -Foster Kennedy’s syndrome-tumor of frontal lobe,ipsilateral atrophy & contralateral edema Hemianopia-loss of ½ vision Heteronymous-loss of different sides of vision Homonymous-loss of visual field from the some side Quadrantopia-loss of ¼ visual field Optical deficyt syndrome affection of: -optical nerve>ipsilateral blindness of eye -optic chiasma>heteronymous(medial portion of hemianopsia) -optic tract>contralateral homoanimos
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  • Winter '18
  • Jane doe

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