Neuro reflexes Exam 1

A complete lesion (surgical or otherwise) to the corpus collosum would result in what?

• no communication between the cerebral hemispheres (split-brain patient)

• abnormal nystagmus

• loss of vision in both eyes due to cerebellar damage

• loss of function for nerves II and III

Put treat in one hand and leave the other hand empty- keep hands in fist and present to dog. Should be able to identify which hand is holding the treat, what nerve is being tested?

• optic nerve

• olfactory nerve

• oculomotor nerve

• trochlear nerve

What assessments are performed for the optic nerve?

• pupillary light reflex

• corneal reflex

• Visual reflex

• palpebral reflex

• Menace response

A lesion to the oculomotor nerve causes what direction movement of the eye

• lateral strabismus

• extorsion

• medial strabismus

• intorsion

lesion to the trochlear nerve causes what type of eye directional movement

• lateral strabismus

• extorsion

• medial strabismus

• intorsion

lesion to the oculomotor nerve would cause what in regards to the pupil

• inability to dilate the pupil

• inability to constrict the pupil

• nothing- the pupil is not innervated by the oculomotor

oculomotor nerve lesion would cause what in regards to the eyelid

• loss of ability to open the eyelid

• loss of ability to close the eyelid

• inability to open or close the eyelid

• nothing- this nerve does not innervate the eyelid

A lesion to the abducent nerve would cause what clinical signs

• lateral strabismus

• medial strabismus

• absence of third eyelid reflex

• pupillary dilation

Ophthalmic branch of trigeminal lesion would include

• failure to open the eye

• failure of sensation the mouth

• absent sensation around cheek and nostrils

• absent palpebral reflex

Lesion to the maxillary branch of trigeminal

• absent sensation around the eye

• absent sensation around the cheek and nostril

• loss of palpebral response

• loss of motor innervation to the cheek and nostril