Meckel's Cartilage

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Related to Meckel's Cartilage: Meckel's diverticulum, Reichert's cartilage

Meckel's cartilage

[′mek·əlz ‚kärt·lij]

(embryology)

The cartilaginous axis of the mandibular arch in the embryo and fetus.

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Meckel’s Cartilage

the primary mandible in gnathostomes and man, named for J. Meckel.

In all fish (except the cartilaginous group) and terrestrial vertebrates, Meckel’s cartilage is clad in integumentary bones and may itself be partly or completely ossified. The ossified posterior section of Meckel’s cartilage, the articular bone, joins the quadrate bone at the mandibular joint. In mammals, the articular and quadrate bones become the auditory ossicles (the malleolus and the incus); the remaining part of Meckel’s cartilage is reduced (preserved only in the embryo).

References in periodicals archive ?

The quadrate lies in the same straight line with Meckel's cartilage. Also, there is a posterior dragging of the quadrate cartilage.

Prenatal development of the sound transmitting apparatus in different embryonic stages of Malpolon monsspesulanus (squamata-serpentes)/ Desenvolvimento pre-natal do aparelho transmissor de som em diferentes estagios embrionarios de Malpolon monsspesulanus (Squamata-serpentes)

Both muscles originate from the ascending process of the palatoquadrate, ventral to the posterior margin of the eye, and insert on Meckel's cartilage of the lower jaw.

Jaw muscle development and metamorphosis in tadpoles of Eastern Narrowmouth toads (Gastrophryne carolinensis: microhylidae)

Developed in the dermis and capable of bearing rooted teeth, dermal bone was laid down over the entire original chondrocranium on the undersurface of the palatoquadrate and the anterior portion of Meckel's cartilage. These are the bones that form the dermatocranium.

Phylogeny and embryology of the facial nerve and related structures. Part I: phylogeny

RAI 2 Partial deletions and distortions of midbrain/ hindbrain border region (MB/HB); eyes slightly closer together; axis slightly truncated; heart smaller with pericardial edema, otocysts slightly closer to MB/HB; tail slightly curled; deletions of the quadrate, pterygoid, and hyosymplectic cartilage; malformations of Meckel's cartilage, ceratohyals and the basihyal.

Exogenous retinoic acid during gastrulation induces cartilaginous and other craniofacial defects in Fundulus heteroclitus

(5,7) He put forth the notion that not every middle ear conforms to the territorial confines of Reichert's and Meckel's cartilage. In fact, a case such as the one we describe here could be explained only by the derivation of each ossicle from separate populations or islands of mesenchymal cells.

Congenital absence of the incus bilaterally without other otologic anomalies: a new case report. (Original Article)

Coracomandibularis (CM): this is a paired muscle, originating on the deep hypobranchial rafe, runs in cephalic direction, and inserts on the ventral surface of Meckel's cartilage. Fibers of this muscle are long, with parallel arrangement.

Compared Morphology of the Cephalic Musculature in Five Species of Genus Urotrygon (Chondrichthyes: Urolophidae)/ Morfologia Comparada de la Musculatura Cefalica de Cinco Especies del Genero Urotrygon (Chondrichthyes: Urolophidae)

The mylohyoid bridge: an anomalous derivative of Meckel's cartilage. J.

Multiple Morphological Variations in a Human Mandible/Multiples Variaciones Morfologicas en una Mandibula Humana

Role of the early epithelium in the patterning of the teeth and Meckel's cartilage. J.

The Effects of Polymeric Zinc Propylen-Bis-Dithiocarbamate (Propineb) on Tooth Development in Rats/Efectos del Propileno-Bis-Ditiocarbamato de Zinc Polimerico (Propineb) sobre el Desarrollo de los Dientes en Ratas

MORPHOLOGICAL AND MORPHOMETRIC ALTERATIONS INDUCED BY VALPROIC ACID ON RAT FETUSES' MECKEL'S CARTILAGE, LINGUAL MUSCULATURE, AND SUBMANDIBULAR GLAND

Alteraciones morfologicas y morfometricas inducidas por acido valproico en cartilago de Meckel, musculatura lingual y glandula submandibular de fetos de ratas