The deep petrosal nerve carries postganglionic sympathetic axons to the pterygopalatine ganglion, which pass through without synapsing. These axons innervate blood vessels and mucous glands of the head and neck.

What does the lesser petrosal nerve innervate?

The lesser petrosal nerve consists of parasympathetic fibers. It leaves the tympanic plexus to synapse in the otic ganglion, and eventually provide parasympathetic innervation to the parotid gland.

What nerve conveys parasympathetic fibers to the lacrimal gland?

Postganglionic parasympathetic fibers enter the maxillary nerve through its ganglionic branches for distribution to the lacrimal gland and to nerves leaving the ganglion to palatine and nasal mucous glands (Piagkou et al., 2011).

What does the Vidian nerve innervate?

Parasympathetic System; Overview The pterygopalatine ganglion neurons innervate the lacrimal glands, the blood vessels of the eye, the blood vessels and secretory glands of the nasal cavity and palate, and the cerebral blood vessels.

What is the tympanic nerve?

Medical Definition of tympanic nerve : a branch of the glossopharyngeal nerve arising from the petrosal ganglion and entering the middle ear where it takes part in forming the tympanic plexus. — called also Jacobson’s nerve.

What does the Infraorbital nerve innervate?

The infraorbital nerve supplies sensory innervation to the lower eyelid, the side of the nose, and the upper lip (see image below). … The infraorbital nerve supplies sensory branches to the lower eyelid, the side of the nose, and the upper lip.

What muscles does facial nerve innervate?

The facial nerve passes through the stylomastoid foramen in the skull and terminates into the zygomatic, buccal, mandibular, and cervical branches. These nerves serve the muscles of facial expression, which include the frontalis, orbicularis oculi, orbicularis oris, buccinator, and platysma muscles.

What does the Nasopalatine nerve innervate?

The anterior palatine nerve innervates the gingivae and the structures of the maxillary teeth as far forward as the canines, while the nasopalatine nerve primarily innervates the mucosa surrounding the incisive papilla and the gingival margins of the maxillary incisors.

What is the alveolar nerve?

The superior alveolar nerves are all branches of the maxillary nerve, which is the second branch of the trigeminal nerve. … The inferior alveolar nerve, which is small in length, is a branch of the mandibular nerve, which is the third branch of the trigeminal nerve.

Where does deep petrosal nerve come from?

The deep petrosal nerve is a branch from the internal carotid plexus. The plexus is located on the lateral side of the internal carotid as it courses superiorly. The deep petrosal enters the skull through the carotid canal with the internal carotid artery.

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What does the vagus nerve innervate?

The recurrent laryngeal nerve branches from the vagus in the lower neck and upper thorax to innervate the muscles of the larynx (voice box). The vagus also gives off cardiac, esophageal, and pulmonary branches. In the abdomen the vagus innervates the greater part of the digestive tract and other abdominal viscera.

What nerve innervates the submandibular ganglion?

Preganglionic axons leave the facial nerve in the chorda tympani nerve and join the lingual nerve to reach the submandibular ganglion (Diamant and Wiberg, 1965; Mitchell, 1953a).

What Innervates the tympanic membrane?

Nerve supply The inner surface of the tympanic membrane is innervated by the glossopharyngeal nerve.

Where does the tympanic nerve come from?

The tympanic nerve arises from the inferior ganglion of the glossopharyngeal nerve traversing through the tympanic canaliculus into the middle ear. On the promontory it coalesces with sympathetic fibres from the carotid chain forming the tympanic plexus.

What is the tympanic membrane made of?

The tympanic membrane is made up of a thin connective tissue membrane covered by skin on the outside and mucosa on the internal surface.

What is nerve paralysis?

When something disrupts nerve signals to muscles, you may experience paralysis — being unable to make voluntary movements. Common causes of paralysis include strokes, spinal cord injuries and nerve disorders like multiple sclerosis.

What salivary glands does the facial nerve innervate?

The chorda tympani provides taste sensation from the anterior 2/3 tongue and also carries preganglionic parasympathetic nerve fibers that innervate the submandibular and sublingual salivary glands.

How deep are facial nerves?

The main trunk of the facial nerve emerges anterior to the mid earlobe about 20 mm deep. As the frontal branch exits the parotid gland at an average depth of 9 mm,9 the nerve courses superficial to the periosteum of the zygomatic arch and may be up to 3 mm superficial to the arch.

What does the anterior superior alveolar nerve innervate?

The anterior superior alveolar usually innervates all anterior teeth, loops backwards to join the middle superior alveolar nerve to form the superior dental plexus.

What is infraorbital?

Medical Definition of infraorbital : situated beneath the orbit the infraorbital prominence of the cheekbones.

What does the incisive nerve innervate?

Incisive nerve: Innervates the canines and incisors in the lower jaw. Mental nerve: Plays a sensory role in the lower, forward part of the face.

What nerve Innervates the gums?

The inferior alveolar nerve is responsible for innervation of the gums, dental sockets, and mandible. The inferior alveolar artery is the dominant blood supply to the mandible, gums, teeth, and nerves in the lower jaw.

Which nerve Innervates maxillary first and second premolars?

Branches of three major divisions. Within the infraorbital canal, the maxillary division is known as the infraorbital nerve and gives off the middle and anterior superior alveolar nerves. When present, the MSA nerve descends along the lateral wall of the maxillary sinus to innervate the first and second premolar teeth.

What does anterior ethmoidal nerve innervate?

The anterior ethmoidal nerve is a nerve which provides sensory branches to the nasal cavity. … The branches it gives rise to are called the internal and external nasal branches of the anterior ethmoidal nerve, and the external branch ultimately innervates skin on the lateral sides of the nose.

What nerve Innervates the hard palate?

The greater palatine and nasopalatine nerves both branches of the maxillary nerve innervate the hard palate, whereas the lesser palatine branch of the maxillary nerve supplies the soft palate. The buccal nerve, also a branch of the mandibular division of the trigeminal nerve innervates the cheek.

How do you anesthetize the nasopalatine nerve?

1. Hold the needle at right angles to the papilla. …
2. Retract the lip to improve visibility.
3. Insert the needle into the papilla just above the crest of bone.
4. Direct it toward the incisive papilla on the palatal side of the interdental papilla while slowly injecting anesthetic solution.

Is the deep petrosal nerve in the middle cranial fossa?

Leaving the geniculate ganglion, the greater petrosal nerve pierces the upper surface of petrous temporal bone, enters the middle cranial fossa, is joined at foramen lacerum by the deep petrosal nerve (sympathetic fibres from internal carotid plexus) to form the nerve of the pterygoid canal, which goes to the …

What is the lingual nerve a branch of?

The lingual nerve is one of the sensory branches of the mandibular division of the trigeminal nerve.

What does the carotid plexus innervate?

Previous research suggest that the external carotid plexus innervates sweat glands on the lateral side of the forehead, whereas the internal carotid plexus innervates the medial forehead’s sweat glands [15]. The external carotid plexus passes filaments to the carotid body and thyroid glands [7].

What does the hypoglossal nerve innervate?

The hypoglossal nerve enables tongue movement. It controls the hyoglossus, intrinsic, genioglossus and styloglossus muscles. These muscles help you speak, swallow and move substances around in your mouth.

Does vagus nerve innervate diaphragm?

The phrenic is the motor and sensory nerve of the diaphragm. The vagus provides the parasympathetic supply for all the organs of the thorax and abdomen. The courses of these two nerves are similar: they both start in the neck, run downward in the mediastinum, and pass through the diaphragm.