Commissure

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commissure

[′käm·ə‚shu̇r]
(biology)
A joint, seam, or closure line where two structures unite.

Commissure

 

in human and animal anatomy, a site of union or junction.

The commisura labiorum oris is the junction of the lips at the corners of the mouth. The anterior commissure of the cerebrum is the transverse bundle of nerve fibers that unites the corpora striata of the forebrain in the majority of vertebrates. The anterior commissure of the mantle, or the commissura fornicis, joins the hemispheres of the forebrain in dipnoans and terrestrial vertebrates—the basis of the corpus callosum in mammals.

References in periodicals archive ?
We performed radical surgical excision of the lesion, resulting in a full-thickness defect with preservation of only 10% of the lower lip near the left commissure (Fig.
Positions of the ostia were also observed with reference to the commissures.
Similar to that of preceding species, except for narrower commissure of buccal ganglia (Fig.
By stage 25, the MLF was well established and the ventral commissure (VC) had formed across the ventral midline (Figure 1(i)).
The partly fused rostral and pineal plates, also partly fused preorbital plates and the presence of long occipital cross commissures on the nuchal and paranuchal plates show some similarity between Eukaia and such actinolepidoids as Actinolepis and Bollandaspis.
The corpus callosum is the largest commissure connecting the cerebral hemispheres.
By far the largest and most important fibre tract to be cut was the corpus callosum, but in early operations other tracts were also sectioned, including the anterior commissure and the hippocampal commissure.
L], nucleus of larval epidermis cell; Oc, ocellus; Pb, proboscis; Pc, posterior cirrus; St, mouth; VC, ventral commissure of cerebral ganglia; Y, yolk.
Employing a bicommissural reference, a selection of slices in three spatial dimensions, axial, coronal and sagittal, was obtained with the objectives to localize structures of the internal cerebral anatomy of the spider monkey, especially of the fifth temporal gyrus, the anterior white commissure, the gyrus of the cingulum and the great sulci, and to compare these structures afterwards to the cerebral structures of the human (H.
intercostal areas; transverse commissures abundant, closely arranged,
Clinical Commissures connects the psychopharmacology practitioner with recent educational events and activities in the field