Meck·el's cartilage (m k  lz)n. See mandibular cartilage. |
Meckel's cartilage
[mek′elz]
Etymology: Johann Friedrich Meckel, German anatomist, 1781-1833
a cartilaginous bar (in the embryo). From it or its sheath, the sphenomandibular ligament, the malleus, and the incus develop. Also called Meckel's rod.
cartilage [kahr´tĭ-lij]
a specialized, fibrous connective tissue present in adults, and forming most of the temporary skeleton in the embryo, providing a model in which most of the bones develop, and constituting an important part of the organism's growth mechanism; the three most important types are hyaline cartilage, elastic cartilage, and fibrocartilage. Also, a general term for a mass of such tissue in a particular site in the body.
Involvement of joint and cartilage in osteoarthritis. From ARHP Arthritis Teaching Slide Collection, American College of Rheumatology.
alar c's the cartilages of the wings of the nose.
aortic cartilage the second costal cartilage on the right side.
arthrodial cartilage (articular cartilage) that lining the articular surfaces of synovial joints.
arytenoid c's two pyramid-shaped cartilages of the larynx.
connecting cartilage that connecting the surfaces of an immovable joint.
costal cartilage a bar of hyaline cartilage that attaches a rib to the sternum in the case of true ribs, or to the immediately above rib in the case of the upper false ribs.
cricoid cartilage a ringlike cartilage forming the lower and back part of the larynx.
diarthrodial cartilage articular cartilage.
elastic cartilage cartilage that is more opaque, flexible, and elastic than hyaline cartilage, and is further distinguished by its yellow color. The ground substance is penetrated in all directions by frequently branching fibers that give all of the reactions for elastin.
ensiform cartilage xiphoid process.
fibrous cartilage fibrocartilage.
floating cartilage a detached portion of semilunar cartilage in the knee joint.
hyaline cartilage flexible, somewhat elastic, semitransparent cartilage with an opalescent bluish tint, composed of a basophilic fibril-containing substance with cavities in which the chondrocytes occur.
Hyaline cartilage. The matrix nearest the chondrocytes is intensely staining; although the matrix appears homogeneous, collagen fibrils may be visualized by polarized light or electron microscopy. From Dorland's, 2000.
Meckel's cartilage the ventral cartilage of the first branchial arch.
permanent cartilage cartilage that does not normally become ossified.
Reichert's cartilage the dorsal cartilage of the second branchial arch.
reticular cartilage elastic cartilage.
semilunar cartilage one of the two interarticular cartilages of the knee joint.
temporary cartilage cartilage that is normally destined to be replaced by bone.
thyroid cartilage the shield-shaped cartilage of the larynx, underlying the laryngeal prominence on the surface of the neck.
vomeronasal cartilage either of the two narrow strips of cartilage, one on each side, of the nasal septum supporting the vomeronasal organ.
yellow cartilage elastic cartilage.
cartilage,
n a derivative of connective tissue arising from the mesenchyme. Typical hyaline type is a flexible, rather elastic material with a semitransparent, glasslike appearance. Its intercellular substance is a complex protein (chondromucoid) through which is distributed a large network of connective tissue fibers.
cartilage, articular,
n a thin layer of hyaline cartilage located on the joint surfaces of some bones. Not usually found on articular surfaces of temporomandibular joints, which are covered with an avascular fibrous tissue.
n the cartilage containing a rounded articular protrusion, or condyle, present at bone joints. Condylar cartilage of the mandible is a common type.
cartilage, cricoid,
n the most inferior cartilage of the larynx.
cartilage, Meckel's,
n.pr the cartilaginous process in the embryo derived from the mesenchymal tissue of the mandibular process.
cartilage, primary,
n the cartilage formed during fetal development that is not replaced by bone.
cartilage, Reichert's
n.pr the cartilaginous process located laterally in the embryonic tympanum; gives rise to styloid processes, stylohyoid ligaments, and lesser horns of hyoid bone.
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