Cranial nerve anatomy (general stuff) Flashcards
Sensory innervation to the middle ear
Tympanic nerve from glossopharyngeal
Parasympathetic innveration of parotid gland?
CNIX….
from the inferior salivatory nucleus
travel with tympanic nerve to middle ear, then as lesser petrosal nerve to synapse in the otic ganglion.
From otic ganglion, hitchike ride with the auriculotemporal nerve of V3 to parotid. Secretomotor
What is the afferent and efferent arm of the gag reflex
Afferent CNIX
Efferent CNX
What nerves are these nerves emerging from, and what is their function:
- Posterior auricular
- Great auricular nerve
- Auriculotemporal
Posterior auricular: innervates the intrinsic and extrinsic muscles of the outer ear. It also supplies the occipital part of the occipitofrontalis muscle.
Great auricular: The great auricular nerve (or greater auricular nerve) originates from the cervical plexus, composed of branches of spinal nerves C2 and C3. It provides sensory innervation for the skin over parotid gland and mastoid process, and both surfaces of the outer ear.
Auriculotemporal nerve: branch of the mandibular nerve (V3) that runs with the superficial temporal artery and vein, and provides sensory innervation to various regions on the side of the head.
Which cranial nerves are the following nuclei associated with:
SUPERIOR SALIVATORY
INFERIOR SALIVATORY
Superior- facial
inferior- GP
Outline which nerves hitchhike a ride with branches of V3
- Chorda tympani (taste (solitary) and PNS (superior salivatory) from CNVII) hitchhike with the lingual nerve to supply secretomotor to submandibular and sublingual (via sublingual ganglion) and the taste to the anterior 2/3 of the tongue
- Lesser petrosal nerve (inferior salivatory nucleus) travel with a branch of GP nerve until the otic ganglion. After otic ganglion, it hitchhikes with the auriculotemporal (V3, sensory, trigeminal) nucleus) to provide secretomotor to the parotid
