Cranial Nerves Flashcards
Touch and pain sensations from the scalp, conjunctiva and forehead are carried by (i) which type of axon modality and (ii) by which nerve? GSA – Zygomatic GSA – Nasociliary GSA – Frontal GSA – Lacrimal SSA – Zygomatic SSA – Nasociliary SSA – Frontal SSA – Lacrimal
GSA – Frontal
When considering the innervation of the glands of the palate and nasal regions, what is (i) the axon modality associated with this innervation and (ii) where do the pre-ganglionic axons synapse? GVA – Otic ganglion GVA – Ciliary ganglion GVA – Pterygopalatine ganglion GVE – Otic ganglion GVE – Ciliary ganglion GVE – Pterygopalatine ganglion SVE – Otic ganglion SVE – Ciliary ganglion SVE – Pterygopalatine ganglion
GVE – Pterygopalatine ganglion
A gross anatomy dissection group has discovered the zygomatic nerve and they are carefully cleaning this nerve so that it can be demonstrated to other students. The group knows that this nerve carries three types of axons, one type which is parasympathetic. Name (i) the axon modality type for the parasympathetic axon and (ii) the cranial nerve that this axon is a resident of and (iii) what this nerve innervates.
SVA – CN V – Taste buds on the palate
SVA – CN VII – Taste buds on the palate
GVE – CN V – Lacrimal gland
GVE – CN VII – Lacrimal gland
GSE – CN VII – muscles of facial expression
GVE – CN VII – Lacrimal gland
All the intrinsic muscles of the larynx are innervated by the recurrent laryngeal nerve, except for one. What is that muscle and what is the nerve that innervates it?
Cricothyroid – External branch of the superior laryngeal nerve
Cricothyroid – Lesser pharyngeal nerve
Cricothyroid – Internal branch of the superior laryngeal nerve
Cricothyroid – External branch of the superior laryngeal nerve
A resident physician is examining a patient who is complaining about a dry eye, dry throat and dry nose. The physician also suspects that any taste buds on the palate may also be compromised. Where is the most likely site of a lesion that would encompass these symptoms? Chorda tympani nerve Lesser petrosal nerve Lingual branch of CN IX Internal branch of the superior laryngeal nerve Greater petrosal nerve Lacrimal nerve Zygomatic nerve
Greater petrosal nerve
A tumor compressing on the foramen rotundum would affect which of the following nerves? Ophthalmic Maxillary Mandibular Facial Glossopharyngeal Vagus
Maxillary
A patient has difficulty swallowing and breathing and his speech is hoarse. All these symptoms indicate damage to what cranial nerve? Ophthalmic Maxillary Mandibular Facial Glossopharyngeal Vagus
Vagus
A tumor at the Inferior Orbital Fissure would affect which of the following?
Visceral motor and general sensation
Visceral motor, taste and general sensation
Somatic motor and general sensation
Somatic motor, taste and general sensation
Special sensory afferent only
Visceral motor and general sensation
When testing the sensory innervation of the face, it is important to remember that the skin on the tip of the nose is supplied by which nerve?
Zygomatic branch of the facial nerve
Maxillary division of the trigeminal nerve
Ophthalmic division of the trigeminal nerve
Buccal branch of the mandibular nerve
Buccal branch of the facial nerve
Ophthalmic division of the trigeminal nerve
As a 4th year medical student, you are examining a patient with ptosis (drooping of the eyelid), dilation of the pupil and a downwardly abducted eye. You conclude that the patient has sustained damage to which of the following? Abducens nerve Oculomotor nerve Trochlear nerve Trigeminal nerve Facial nerve
Oculomotor nerve
Which of the following cranial nerves contains parasympathetic axons that are acquired from CN III? CN IV CN V CN VII CN IX CN X
CN V
Which of the following cranial nerves all contain axons that were derived from pharyngeal / branchial arches (BE/SVE axons)? CN III, VII, IX, X CN II, III, IX, X CN V3, VII, IX, X CN V1, VII, IX X
CN V3, VII, IX, X
A 42-year-old man comes to the emergency department with an abscess of the parotid gland that is subsequently excised and drained. The physician who performs this procedure knows that innervation to the parotid gland is provided by what type of axons and which cranial nerve? SVA; CN X SVA; CN IX GVE; CN X GVE: CN IX GVE; CN VII
GVE: CN IX
