clavicle

Examples of clavicle in the following topics:

• Bone Development

  • It is involved in the formation of the flat bones of the skull, the mandible, and the clavicles.
  • All of the bones of the body, except for the flat bones of the skull, mandible, and clavicles, are formed through endochondral ossification .

• Human Appendicular Skeleton

  • The pectoral girdle bones, providing the points of attachment of the upper limbs to the axial skeleton, consists of the clavicle (or collarbone) in the anterior, as well as the scapula (or shoulder blades) in the posterior .
  • The clavicles, S-shaped bones that position the arms on the body, lie horizontally across the front of the thorax (chest) just above the first rib.
  • (a) The pectoral girdle in primates consists of the clavicles and scapulae.

• Characteristics of Birds

  • Another skeletal modification found in most birds is the fusion of the two clavicles (collarbones), forming the furcula or wishbone.

• Evolution of Birds

  • This course of evolution is suggested by similarities between theropod fossils and birds, specifically in the structure of the hip and wrist bones, as well as the presence of the wishbone, formed by the fusing of the clavicles.