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DIT cranial n + some
CN lesions, pullary light reflex, peripheral n quiz, hyqs
| Question | Answer |
|---|---|
| if you injure the vagus n or nuclei, to what sid will the uvula deviate | opposite the lesion |
| if you injure the motor cortex or corticobulbar tract that innervates the soft palate, to which side will the uvula deviate? | toward the lesion |
| what innervates the R. soft palate | R vagal n, R nucleus ambiggus, L.corticobulbar tract, L motor cortex |
| if the hypoglossal nerve or nuclei is damaged, to what side will the tongue deviate? | toward the lesion |
| if the motor cortex or corticobulbar tract is damaged, what side will the togue deviate? | opposite the lesion |
| what innervates the L tongue? | L hypoglossal, L hypoglossal nucleus, R corticobulbar tract, R motor cortex |
| lesion of cortical motor face region | paralysis of the contralateral side of LOWER face |
| lesion of facial nerve or nucleus | paralysis of ipsilaterl side of ENTIRE face |
| collection of sx indicative of a lesion of the facial n or nucleus | Bell's palsy |
| what disease have Bell's palsy as a compication | Lyme disease, Herpes Zoster, AIDS, Sarcoidosis, Tumors, Diabetes |
| bilateral Bell's palsy | Guillain-Barre or Lyme disease |
| How can a stroke of the facil moter cortex be distinguised from Bell's palsy? | A stroke to the motor cortex will spare the upper face because the facial nuclei are each innervated from both motor cortices |
| Which CNs have their nuclei in the medulla | 9,10,11,12 |
| Which CNs have their nuclei in the pons | 5,6,7,8 |
| which CNs have their nuclei in the midbrain | 3,4 |
| eyelid opening | 3 |
| taste from anterior 2/3 of tongue | 7 |
| head turning | 11 |
| tongue movement | 12 |
| muscles of mastication | V3 |
| balance | 8 |
| monitoring carotid body and sinus chemo and baroreceptors | 9 |
| what info is communicated at the nucleus solitarius | visceral sensory -7,9,10 |
| what info is communicated at the nucleus ambiguus | motor - 9,10,11 (pharynx, larynx, upper esophagus) |
| what information is communicated at the dorsal motor nucleus | parasympathetic autonomic to heart, lungs and upper GI |
| Can't turn head left and has a right should droop | Right Spinal accessory |
| cavernous sinus infection. | ptosis, extraocular m issues (CN3,4,6); hyper or hypo aesthesia (V1,V2) |
| A pt has a leftward deviation of the tongue on protrustion and right sided spastic paralysis. Where is the lesion | left medulla |
| Can't blink right eye or seal lips | Bell's palsy, CN 7 |
| muscles of mastication | masseter, medial pterygoid, temporalis (close jaw); lateral pterygoid (opens jaw) |
| anterior should dislocation -affected arterny and nerve | axillary n/ post circumflex a |
| mid shaft humerus fracture. damaged arter and nerve? | radial n/ deep brachial a = wrist drop and l/o brachioradialis reflex |
| decreased pain and temp sensation over the lateral aspects of both arms. | Syrinx = central canal of SC |
| decreased prick sensation on lateral aspect of foot and leg. what else is wrong? | l/o dorsiflexion and eversion d2 damage of the common peroneal n. |
| hurt elbow. can't feel median palm. | ulnar n due 2 injury of medial epicondyle |
| pain, numbness and tingling over the lateral digits of her R hand. Thenar eminence wasting. | Carpal tunnel = median n. |
| decreased plantar flexion and decreased sensation over back of thigh, calf, and lateral half of foot. What spinal n is involved? | tibial n |
| fibula neck fracture. What nerve is damaged? | deep peroneal |
| pupillary light reflex p/w | retina - optic tract/n - pretectal nucleus - bilateral edinger-westphal nuc - pregang PS fibers in oculomotor n - ciliary gang - postgang PS fibers - pupillary sphincter of iris = MIOSIS |
| If the right optic nerve is damaged prior to pretectal nucleus (afferent defect) | No constriction of either eye when light is shined in R eye; constriction of both when shined in L eye |
| If the right oculomoter nerve is damaged (efferent defect) | R eye will never responds. Left eye will always respond |
| A pt can't adduct her left eye on lateral gaze but convergence is nL | MLF damage = internuclear ophthalmoplegia. seen in MS |
Created by:
kayjames
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