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69 Cards in this Set
- Front
- Back
What does CN XII innervate to control ONLY the SHAPE of the tongue?
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Intrinsic M
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What are the Extrinsic M of the tongue?
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Styloglossus, Hyoglossus, Genioglossus
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What does CN XII innervate to control the shape AND position of the tongue?
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Extrinsic M
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What Extrinsic tongue muscle causes contraction on both sides of the tongue and causes the tongue to protrude?
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Genioglossus M
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Unilateral damage to CN XII will cause what?
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tongue to deviate to SAME side
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Supranuclear Paralysis of CNXII will cause what?
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tongue to deviate to CONTRA side
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CN XII exits via _________________.
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Hypoglossal Canal
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Where does CN XI arise from?
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Ventral Horn of C5-6
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Pt has difficulty moving their head to the opposite side, where is the lesion?
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CN XI--- lesion to SCM
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Supranuclear Palsy of CNXI results in what?
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CONTRA paralysis of SCM and Trap
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What branchial arch is SVE of CN IX?
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3rd arch
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What is the role of GVE of CN IX?
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innervate Parotid Gland to release saliva
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Unilateral damage to CN IX will have effect?
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NONE
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Bilateral damage to CN IX will have what effect?
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loss of taste and sensation of post 1/3 tongue
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Where does SVE component of CN IX arise from?
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Rostral 1/2 of Nucleus Ambiguus
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CN XI exits via _____________.
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Jugular Foramen
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What is the innervation of CN IX?
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Stylopharyngeus M-- elevates upper part pharynx during speech and swallowing
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What component of CN IX senses changes in blood gases and ph by the Carotid Body and taste in the post. Tongue?
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SVA
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What will the body do when it senses high amounts of carbon dioxide in the blood?
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Carotid Body (chemo) Reflex
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What is a way to test for Brain Death?
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turn off ventilator for 10 min. to see if pt. has active Carotid Body (chemo) Reflex
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What is responsible for somasensory for the Eustachian Tube?
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CN IX----GSA
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Vagus N wanders from BS to the ________________.
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Splenic Flexure of the Colon
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GVE of CN X arises from where?
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Dorsal Motor Nucleus X
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Damage to GVE of CN X will result in what?
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Hyperactivity and increase stomach secretions and ulcers. Unilateral only noticeable thing is ipsi loss of Carotid Sinus Baroreflex
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SVE of CN X arises from what Branchial arches?
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4th and 5th
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SVE of CN X arises from what nuclei?
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Nucleus Ambiguus
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What are the 3 branches of the SVE component of CN X?
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1. Pharyngeal N 2. Superior Laryngeal N 3. Recurrent Laryngeal N
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What innervates the pharynx and soft palate?
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Pharyngeal Br. Of CN X
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What innervates the Inferior Constrictor M, Cricothyroid M, and Superior Cardiac N?
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Superior Laryngeal N of CN X
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What innervates the Larynx?
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Recurrent Laryngeal N of CN X
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Bilateral damage of CN X results in what?
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If vocal cords abducted-- aphonia and asphyxia that can be FATAL b/c constriction of laryngeal muscles
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What is responsible for Homeostatic Regulation of CV system?
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Baroreceptor Reflex
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What CN is responsible for peristalsis of stomach and intestines, vomitting, gastric and bronchial secretions (coughing)?
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GVA component of CN X
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What innervates the back of the ear and the Auditory Canal?
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GSA of CN X
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What are some affects of a tumor on CN X?
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STIMULATE reflex of cough, vomitting, increase resp. secretion and fainting
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What are the 2 fxns of the SVA of CN X?
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Respiratory and Taste
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What senses taste of the Epiglottis and post wall of the pharynx?
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SVA of CN X
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What is the dx? Pt. face is constantly blinking.
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Hemifacial Spasm
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SVE of CN XII derived from what?
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2nd branchial arch
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SVE component of CN XII exits by entering __________ and ____________________. Then travels thru ____________. Finally exits via _____________.
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What innervates the Stapedius M?
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SVE of CN VII
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What is responsible for reflex closing of the eye on touching the cornea?
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SVE of CN VII
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What is responsible for reflex contraction of stapedius m following a loud noise?
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SVE of CN VII
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What is the MOST important differential of Bell's Palsy?
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Lyme Dx (bilateral Bells possible with this as well)
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How would you determine if your pt with Bells had disturbance proximal or distal to the Chorda Tympani?
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Taste Disturbance
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Bells is caused by edema/entrapment and resultin ischemia of CN VII as it passes thru ______________.
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Stylohyoid Foramen
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What may be coorleated with Herpes Simplex and Varicella Zosterin the Geniculate Ganglion?
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Bells Palsy
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What is commonly a initial prob of a Bells palsy pt?
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dull ache behind ear
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What is Lagophthalmos?
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Inability to close eye (in Bells palsy this is due to paralysis of Orb. Oculi M
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What is the role of GVE of CN VII?
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salivation and secretion from lacrimal mucous glands and of nasal and oral cavities
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Where does GVE of CN VII arise from?
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Superior Salivatory Nucles in Reticular Formation
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What is responsible for taste of ant. 2/3 tongue?
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SVA of CN VII
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what is responsible for somatosensory from anterior 2/3 of the head?
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GSA of CN V
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What is another name for Trigeminal Ganglion? Give 2.
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Gasserian or Semilunar Ganglion
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Where is the Trigeminal Ganglion located?
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on a cleft of petrous bone lateral to cavernous sinus
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What innervates the dura?
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CN V
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Opthalmic Br. Of CN V exits via ____________.
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Superior Orbital Fissure
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Maxillary Br. Of CN V exits via _______________.
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Foramen Rotundum
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Mandibular Br. Of CN V exits via _________________.
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Foramen Ovale
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SVE of CN V exits via _________________.
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Foramen Ovale
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SVE of CN V receives _______________ from CC.
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Bilateral Inputs
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SVE of CN V arises from what branchial arch?
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1st!!!!
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What provides muscle of mastication?
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SVE of CN V
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Fibers for P and T lead to what?
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caudal Spinal Nucleus
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Fibers for Conscious Proprio, Pressure, and Tactile sense lead to what?
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Main Sensory V (some to Spinal)
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Some receptors in V3 are muscle spindles and mediate unconscious proprioception. Where do they terminate?
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Mesenphalic of V
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Where does the 2nd limb of the Mesencephalic Nucleus transmit to?
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Motor V
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What is responsible for providing the jaw jerk reflex?
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Mesenphalic Of V transmitting info to the Motor of V
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Some Trigeminal pain fibers assoc. with posterior aspect of face may extend ____________.
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C2 of the SC
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