- - false chordae tendineae [TA] tendinous cords that, unlike the true chordae tendineae, do not attach to the leaflets of the atrioventricular valves. Instead they connect papillary muscles to each other or to the ventricular wall (including the interventricular septum), or merely pass between two points on the ventricular wall (including the septum). SYN: chordae tendineae falsae [TA], chordae tendineae spuriae, false tendinous cords.- c. magna SYN: calcaneal tendon.- c. obliqua membranae interosseae antebrachii [TA] SYN: oblique cord of interosseous membrane of forearm.- c. spermatica SYN: spermatic cord.- chordae tendineae falsae [TA] SYN: false chordae tendineae.- chordae tendineae of heart [TA] the tendinous strands running from the papillary muscles to the leaflets of the atrioventricular valves (mitral and tricuspid). Based on their shape, position, or specific area of attachment to the leaflets, several varieties have been described: fan-shaped chordae, rough zone chordae, free-edge chordae, deep chordae, and basal chordae. SYN: chordae tendineae cordis [TA], tendinous cords.- chordae tendineae spuriae false chordae tendineae.- c. tympani [TA] a nerve given off from the facial nerve in the facial canal which passes through the posterior canaliculus of the c. tympani into the tympanic cavity, crosses over the tympanic membrane and handle of the malleus, and passes out through the anterior canaliculus of the c. 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. SYN: cord of tympanum, parasympathetic root of submandibular ganglion, radix parasympathica ganglii submandibularis, tympanichord.- c. umbilicalis SYN: umbilical cord.- c. vocalis, pl.chordae vocales SYN: vocal fold.- chordae willisii SYN: Willis cords, under cord.
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* * *n. (pl. chordae)a cord, tendon, or nerve fibre. The chordae tendineae are stringlike processes in the heart that attach the margins of the mitral and tricuspid valve leaflets to projections of the wall of the ventricle (papillary muscles). Rupture of the chordae, through injury, endocarditis, or degenerative changes, results in mitral incompetence.
* * *chor·da (korґdə) gen. and pl. chorґdae [L., from Gr. chordē cord] a cord or sinew.
Medical dictionary. 2011.