What is lesser petrosal nerve a branch of?
glossopharyngeal nerve
The lesser petrosal nerve (Figure 26.3) is a continuation of the presynaptic fibers of the tympanic branch of the glossopharyngeal nerve with contributions from the nervus intermedius part of the facial nerve, and the auricular branch (Alderman’s or Arnold’s nerve) of the vagus nerve.
What is the function of lesser petrosal nerve?
Anatomical terms of neuroanatomy The lesser petrosal nerve (also known as the small superficial petrosal nerve) is the general visceral efferent (GVE) component of the glossopharyngeal nerve (CN IX), carrying parasympathetic preganglionic fibers from the tympanic plexus to the parotid gland.
What are the branches of trigeminal nerve?
It contains the sensory cell bodies of the 3 branches of the trigeminal nerve (the ophthalmic, mandibular, and maxillary divisions). The ophthalmic and maxillary nerves are purely sensory.
What is the greater petrosal nerve a branch of?
facial cranial nerve
Excerpt. The greater petrosal nerve or superficial petrosal nerve is a branch of the nervus intermedius (nerve of Wrisberg) that carries parasympathetic, taste, and sensory fibers of the facial cranial nerve (CN VII).
What does the Greater and lesser petrosal nerve innervate?
The greater palatine nerve that innervates the bony hard palate of the mouth. The lesser palatine that innervates the uvula, tonsils and soft palate. The nasal palatine and posterior nasal branches that innervate the nasal mucous membranes. The pharyngeal branch that innervates the glands and mucosa of the nasopharynx.
What is the auriculotemporal nerve a branch of?
trigeminal nerve
The auriculotemporal nerve is a tributary of the mandibular division of cranial nerve five, the trigeminal nerve. It contains sensory, vasomotor, and parasympathetic fibers.
What are the branches of the maxillary nerve?
Branches
- Zygomatic nerve (zygomaticotemporal nerve, zygomaticofacial nerve), through the Inferior orbital fissure.
- Nasopalatine nerve, through the sphenopalatine foramen.
- Posterior superior alveolar nerve.
- Greater and lesser palatine nerves.
- Pharyngeal nerve.
What number is trigeminal nerve?
five
The trigeminal nerve, also called the cranial nerve V (that’s the Roman numeral five), is the fifth of 12 cranial nerves. You have two trigeminal nerves, one on each side of your body. They start in your brain and travel throughout your head.
How is greater petrosal nerve formed?
It’s formed by two roots that emerge from the brainstem at a spot called the pontomedullary junction. CN7 and its branches control most of the facial muscles and glands that produce saliva and tears. This nerve also plays a role in taste. Behind the ear, the facial nerve enters a bony structure called the facial canal.
What is the lingual nerve a branch of?
mandibular division
The lingual nerve is one of the sensory branches of the mandibular division of the trigeminal nerve.
What does the auriculotemporal nerve innervate?
The superior root of the auriculotemporal nerve contains general somatic afferent fibers that provide sensation to the tragus and helix of the ear, the external portion of the tympanic membrane, the posterior temporomandibular joint, and the temple.
What is the lesser petrosal nerve?
From Wikipedia, the free encyclopedia The lesser petrosal nerve (also known as the small superficial petrosal nerve) is the general visceral efferent (GVE) component of the glossopharyngeal nerve (CN IX), carrying parasympathetic preganglionic fibers from the tympanic plexus to the parotid gland.
Where does the greater petrosal nerve cross the temporal bone?
The greater petrosal nerve crosses the floor of the middle temporal fossa, medially to the lesser petrosal nerve and laterally to the internal carotid artery, anteromedially and slightly inferiorly passing beneath the Gasserian ganglion in Meckel’s cave and onwards towards the foramen lacerum, and the pterygoid (vidian) canal.
Where does the lesser petrosal nerve connect to the chorda tympani?
The lesser petrosal nerve also forms a connection between the otic ganglion (where it terminates), the facial nerve and the glossopharyngeal nerve. This nerve is slender and makes its way in the middle ear to meet the stapedius muscle. The chorda tympani nerve arises from the facial nerve a few millimeters above the stylomastoid foramen.
Where does the greater petrosal nerve exit the uterus?
the auricular branch (vagal anastomosis). Formerly known as the greater superficial petrosal nerve, the greater petrosal nerve exits the temporal bone by the Fallopian hiatus and runs through an osseous conduit, which brings it to the foramen lacerum.
