pars tympanica

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pars tym·pan·i·ca

(pahrz tim-pan'i-kă)
Tympanic portion of the temporal bone, forming the greater part of the wall of the external acoustic meatus.


pl. partes [L.] a division or part.

pars ciliaris retinae
see ciliary body.
pars distalis
the major part of the anterior lobe of the pituitary gland, the adenohypophysis. It is separated from the neurohypophysis by the intraglandular cleft, the residual lumen of Rathke's pouch.
pars disseminata
the thin layer of the prostate that surrounds the urethra; as distinct from the body of the gland.
pars flaccida
the small, triangular portion of the tympanic membrane lying between the lateral process of the malleus and the margins of the tympanic incisure.
pars infundibularis
the neural stalk that connects the neurohypophysis with the hypothalamus.
pars intermedia
the part of the adenohypophysis consisting of a layer of cells contiguous with the neurohypophysis. The source of melanocyte-stimulating hormone.
pars iridica retinae
see iris1.
pars longa glandis
the long, cylindrical part of the dog glans; distinct from the bulbar part.
pars major uteri
the section of the bird's oviduct in which the egg is held while the shell is formed.
pars mastoidea
the mastoid portion of the temporal bone, being the irregular, posterior part.
pars nervosa
of the pituitary gland. See neurohypophysis.
pars optica retina
the large, posterior part of the retina which contains the nervous elements of rods, cones and optic nerve fibers.
pars petrosa
the petrous portion of the temporal bone, containing the inner ear.
pars pigmentosa
the pigmented part of the retina.
pars plana
the thin flat part of the ciliary body; the ciliary disk.
pars plicata
the folded part of the ciliary body.
pars pylorica
distal segment of the stomach or abomasum, curved behind the omasum.
pars pylorica ventriculi
the distal (aboral) third of the stomach.
pars squamosa
the flat, scalelike, anterior and superior portion of the temporal bone.
pars tensa
the drumlike part of the tympanic membrane.
pars tuberalis
a layer of cells surrounding the neural stalk of the pituitary gland and forming part of the adenohypophysis.
pars tympanica
the tympanic portion of the temporal bone, forming the anterior and inferior walls and part of the posterior wall of the external acoustic meatus.
References in periodicals archive ?
In most cases, FT is located on the inferior wall (floor) of the external acoustic canal on the tympanic part of the temporal bone, but sometimes it appears at the apex of squamotympanic and petrotympanic fissures.