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A joint, seam, or closure line where two structures unite.



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 ?
An insufficient view of the surgical site, anterior commissure involvement in the craniocaudal direction (T2), invasion of the posterior paraglottic space with arytenoid fixation, massive infiltration of the pre-epiglottic space, and the presence of minor thyroid cartilage erosion (T3) are the most controversial situations with regard to the use of TLM in glottic and supraglottic cancers (24).
The Bernard-Webster flap is used to reconstruct large lower lip defects with preservation of the commissures by advancing cheek tissue and the remaining lip tissue medially (12, 13).
Ventral to the left naris and extending to the commissure of the mouth, the tissue was pink to yellow and slightly raised.
Since we have to cover a large area of the defect, a large nasolabial flap needs to be raised which again leads to widening of the commissure.
Description: Miospore, trilete, amb characteristically circular, lete distinct, arms of lete approximately half radius, labra absent, commissure smooth, contact area indistinct, exine up to 1.
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 main lateral line (lc), the posterior pit-line (pp) and the occipital cross commissure (occ) converge at the centre of the PNu plate.
the 0[degrees] template (the orbitomeatal line is approximately 9[degrees] steeper than the Talairach anterior commissure [AC]-posterior commissure [PC] line [23]).