chorda tympani


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Related to chorda tympani: otic ganglion, geniculate ganglion, greater petrosal nerve

chorda

 [kor´dah] (pl. chor´dae) (L.)
a cord or sinew. adj., adj chor´dal.
chorda mag´na Achilles tendon.
chor´dae tendi´neae tendinous cords connecting the two atrioventricular valves to the appropriate papillary muscles in the heart ventricles.
Chordae tendineae of the posterior cusps of atrioventricular valves in a cross-section of the heart. From Dorland's, 2000.
chorda tym´pani a nerve originating from the facial nerve, distributed to the submandibular, sublingual, and lingual glands and the anterior two-thirds of the tongue; it is a parasympathetic and special sensory nerve.
chorda umbilica´lis umbilical cord.
chorda voca´lis vocal cord.

chor·da tym·'pa·ni

[TA]
a nerve given off from the facial nerve in the facial canal that passes through the posterior canaliculus of the chorda tympani into the tympanic cavity, crosses over the tympanic membrane and handle of the malleus, and passes out through the anterior canaliculus of the chorda tympani in the petrotympanic fissure to join the lingual branch of the mandibular nerve in the infratemporal fossa; it conveys taste sensation from the anterior two thirds of the tongue and carries parasympathetic preganglionic fibers to the submandibular ganglion, for innervation of the submandibular and sublingual salivary glands.

chorda tympani

a branch of the facial nerve that carries taste from the anterior two thirds of the tongue and parasympathetic innervation to all salivary glands below the level of the oral fissure.

chor·da tym·pa·ni

(kōr'dă tim'pan-ī) [TA]
A nerve given off from the facial nerve in the facial canal that passes through the posterior canaliculus of the chorda tympani into the tympanic cavity, crosses over the tympanic membrane and handle of the malleus, and passes out through the anterior canaliculus of the chorda tympani in the petrotympanic fissure to join the lingual branch of the mandibular nerve in the infratemporal fossa; it conveys taste sensation from the anterior two thirds of the tongue and carries parasympathetic preganglionic fibers to the submandibular ganglion, for innervation of the submandibular and sublingual salivary glands.

chor·da tym·pa·ni

(kōr'dă tim'pan-ī) [TA]
Nerve given off from the facial nerve in the facial canal; conveys taste sensation from the anterior two thirds of the tongue and carries parasympathetic preganglionic fibers to the submandibular ganglion, for innervation of submandibular and sublingual salivary glands.

chorda

pl. chordae [L.] a cord or sinew.

chorda magna
Achilles tendon.
chorda tendineae
tendinous cords connecting the two atrioventricular valves to the appropriate papillary muscles in the heart ventricles.
Enlarge picture
Ruptured chorda tendineae in a horse heart at necropsy. By permission from Knottenbelt DC, Pascoe RR, Diseases and Disorders of the Horse, Saunders, 2003
chorda tendineae rupture
causes acute, massive, cardiac insufficiency leading to congestive heart failure and an early death; called also detachment.
chorda tympani
a nerve originating from the facial nerve, distributed to the submandibular, sublingual and lingual glands and the anterior two-thirds of the tongue; it is a parasympathetic and special sensory nerve.
chorda umbilicalis
umbilical cord.
chorda vocalis
vocal cord.
References in periodicals archive ?
The researchers observed no significant differences in activity of the chorda tympani nerves by taste stimuli across the different age groups.
Bartoshuk has conducted previous research on the chorda tympani.
The chorda tympani is a mixed sensory and secretomotor branch of the facial nerve.
The parasympathetic division of cranial nerve VII supplies fibers that contribute to the greater petrosal nerve (which supplies the lacrimal gland), the lesser petrosal nerve (which supplies the parotid gland), and the chorda tympani (which supplies the submandibular and sublingual glands).
1,2) However, access through the superior opening of the facial recess is limited by the presence of both the facial nerve and the chorda tympani nerve.
In our case, sacrifice of the chorda tympani nerve or repeated stimulation of the dehiscent bifid facial nerve might have provided the stimuli for viral reactivation.
We also discussed the risks, benefits, and alternatives to treatment, as well as the complications of round window niche occlusion, which include bleeding, infection, hearing loss, dizziness, worsening tinnitus, tympanic membrane perforation, and injury to the chorda tympani or facial nerve.
Facial nerve hemangioma occurs at three sites; in decreasing order of frequency, they are the geniculate region, the distal internal auditory canal, and the mastoid segment at the departure of the chorda tympani nerve.
The chorda tympani nerve deserves a great deal of attention.
The chorda tympani nerve was seen leaving the iter chordae posterior and passing between the malleus and incus.
Furthermore, posterior transposition requires severing the chorda tympani and greater superficial petrosal nerves, which results in transient dysgeusia and an ipsilateral dry eye.
One had cholesteatoma invading the fallopian canal, and the other was found to have a chorda tympani nerve injury at exploration.