Cranial Nerves Flashcards
Cranial Nerve I
Olfactory
Cranial Nerve II
Optic
Cranial Nerve III
Oculomotor
Cranial Nerve IV
Trochlear
Cranial Nerve V
Trigeminal
Cranial Nerve VI
Abducens
Cranial Nerve VII
Facial
Cranial Nerve VIII
Vestibulocochlear
Cranial Nerve IX
Glossopharyngeal
Cranial Nerve X
Vagus
Cranial Nerve XI
Accessory
Cranial Nerve XII
Hypoglossal
Cranial Nerve Exam:
Menace
CN II, VII, thalamocortex, cerebellum
Cranial Nerve Exam:
Symmetry pupils and PLR
CN II, III
Cranial Nerve Exam:
Oculocephalic reflex
CN III, IV, VI, VIII, medial longitudinal fasciculus (MLF)
Cranial Nerve Exam:
Palpebral reflex
CN V, VII
Cranial Nerve Exam:
Nasal sensation
Thalamocortex, CN V (sen)
Cranial Nerve Exam:
Muscles mastication
CN V motor
Cranial Nerve Exam:
Facial expression
CN VII motor (most of the time is the upper lip that is droopy)
What nerves do “hands-on” cranial nerve exam tests?
CN II - CN VIII
A 10 year old female spayed Labrador retriever dog is presented to you with a 4-month history of progressive atrophy of the muscles of the left side of the head/face. On neurologic examination, you find severe atrophy of the left temporalis, masseter and digastricus muscles, as well as decreased nasal sensation and corneal sensation on the left. The remainder of the neurologic examination is normal. The most likely diagnosis is:
Trigeminal nerve sheath tumor
What is the function of cranial nerve VII (facial nerve)?
Motor to the muscles of facial expression
Cranial nerve VI (Abducens) innervates which of the following muscles?
Retractor bulbi
