skeleton

skeleton (skel´e-ton)

1. The bony framework of the body in vertebrates (endoskeleton) or the hard outer envelope of insects (exoskeleton or dermoskeleton). 2. All the dry parts remaining after the destruction and removal of the soft parts; this includes ligaments and cartilages as well as bones. 3. All the bones of the body taken collectively. 4. A rigid or semi-rigid non-osseous structure which functions as the supporting framework of a particular sutructure. [G. skeletos, dried, ntr. skeleton, a mummy, a skeleton]
appendicular s.the bones of the limbs including the shoulder and pelvic girdles.s. appendiculare [NA] ;
s. appendicula´re [NA] appendicular s
articulated s.mounted s., one with the various parts connected in such a way as to demonstrate normal relationships and allow motion between components as in the living body.
axial s.articulated bones of head and vertebral column, i.e., head and trunk, as opposed to the appendicular skeleton, the articulated bones of the upper and lower limbs.s. axiale [NA] ;
s. axia´le [NA] axial s
cardiac s.fibrous s. of heart
cardiac fibrous s.fibrous s. of heart
fibrous s. of hearta complex framework of dense collagen forming four fibrous rings (annuli fibrosi), which surround the ostia of the valves, a right and left fibrous trigone, formed by connecting the rings, and the membranous portions of the interatrial and interventricular septa; it is found in association with the base of the ventricles, i.e., at the level of the coronary sulcus; its functions include: 1) contributing reinforcement of the valvular ostia while providing attachment for the leaflets and cusps of the valves; 2) providing origin and insertion for the myocardium; and 3) serving as a sort of electrical "insulator," separating the electrically conducted impulses of the atria and ventricles and providing passage for the common atrioventricular bundle of conductive tissue through the right fibrous trigone and membranous interventricular septum.cardiac fibrous s., cardiac s., s. of heart;
s. of free inferior limbthe bones of the lower limb except the hip bones, i.e., all lower limb bones including and distal to the femur .
s. of free superior limbthe bones of the upper limb except the scapula and clavicle, i.e., all upper limb bones including and distal to the humerus .
gill arch s.cartilages associated with the visceral portion of the embryonic mammalian chondrocranium, representing the gill arch (branchial) skeletons as seen in shark-type fishes; they are the primordia of Meckel's cartilage, the styloid, hyoid, cricoid, thyroid, and arytenoid cartilages, and the auditory ossicles. See also branchial arches, under arch.
s. of heartfibrous s. of heart
jaw s.viscerocranium
s. thoracicus* official alternate term for thoracic cage
visceral s.visceroskeleton (2)

 

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