CN7

Question 0

What classifications of fibers are conveyed at the apparent origin of the seventh cranial nerve?

Answer 0

Branchial efferent, visceral efferent, somatic efferent, and special visceral afferent.

Question 1

Because of its function, the seventh cranial nerve is often called?

Answer 1

Great motor nerve the face.

Question 2

What is the opening through which the seventh cranial nerve exits the cranial vault?

Answer 2

Internal acoustic meatus of the temporal bone.

Question 3

Most of the seventh cranial nerve will exit the skull via what?

Answer 3

The stylomastoid foramen

Question 4

Into what region of the head will the stylomastoid foramen open?

Answer 4

The parotid region.

Question 5

Branchial efferent fibers carried in the seventh cranial nerve will innervate what muscles?

Answer 5

Muscles of facial expression, muscles of the scalp and auricle, the buccinator, platysma, stapedius, stylohyoid, and posterior belly of the digastric.

Question 6

Visceral efferent fibers conveyed in the seventh cranial nerve originate from which nucleus?

Answer 6

Superior salivatory nucleus.

Question 7

Preganglionic visceral efferent fibers of cranial nerve 7 will exit the pons in what nerve?

Answer 7

Nervus intermedius, nerve of wrisberg, sensory root of facial nerve.

Question 8

Which immediate branch of the seventh cranial nerve will convey preganglionic parasympathetic efferent fibers to the lacrimal gland?

Answer 8

Greater petrosal or greater superficial petrosal nerve.

Question 9

Which branch of the seventh cranial nerve will convey preganglionic parasympathetic fibers into the pterygopalatine ganglion?

Answer 9

Vidian nerve or nerve of the pterygoid canal.

Question 10

What are the names of the ganglion of synapse in the efferent pathway of the lacrimal gland?

Answer 10

Pterygopalatine ganglion, sphenopalatine ganglion, and meckels ganglion.

Question 11

Postganglionic parasympathetic efferent fibers from the pterygopalatine, sphenopalatine, or meckels ganglion will become incorporated in which cranial nerve branch?

Answer 11

Maxillary nerve of the trigeminal.

Question 12

Which branch of the zygomatic nerve will convey post ganglionic parasympathetic efferent fibers to the lacrimal gland?

Answer 12

Zygomaticotemporal nerve.

Question 13

Which ophthalmic branch will contain post ganglionic parasympathetic efferent fibers?

Answer 13

Lacrimal nerve.

Question 14

Preganglionic parasympathetic efferent fibers from the seventh cranial nerve to the submandibular and sublingual glands will exit the pons in what nerve?

Answer 14

Nervus intermedius, nerve of Wrisberg, and sensory root of facial nerve.

Question 15

Which immediate branch of the seventh cranial nerve will convey preganglionic parasympathetic efferent fibers to the submandibular gland and sublingual gland?

Answer 15

Chorda tympani nerve.

Question 16

The chordae tympani nerve exits the temporal bone vie which opening?

Answer 16

The petrotympanic fissure of the temporal bone.

Question 17

The chorda tympani nerve will join which nerve?

Answer 17

The lingual nerve of the mandibular division of the trigeminal.

Question 18

Peripheral sensory processes from receptors around the ear and mastoid region are conveyed in the seventh cranial nerve from what other cranial nerve?

Answer 18

Vagus.

Question 19

I general, somatic afferent pathways typically terminate in which nucleus?

Answer 19

Spinal trigeminal nucleus.

Question 20

Peripheral sensory processes from taste receptors located on the anterior two thirds of the tongue are conveyed in which branch of the fifth cranial nerve?

Answer 20

Lingual nerve of mandibular division.

Question 21

Peripheral sensory processes from taste receptors located on the anterior two thirds of the tongue are conveyed in which branch of the seventh cranial nerve?

Answer 21

Chorda tympani.

Question 22

Peripheral sensory processes from taste receptors located on the anterior two thirds of the tongue conveyed in the seventh cranial nerve to what ganglion?

Answer 22

Genicular ganglion or geniculate ganglion.

Question 23

Central processes from pseudounipolar neurons associated with taste in the geniculate ganglion enter the pons in what nerve?

Answer 23

Nervus intermedius, nerve of Wrisberg, and the sensory root of the facial nerve.