List of bones of the human skeleton

From Wikipedia, the free encyclopedia
Jump to: navigation, search
Back view of a skeleton of an adult human

A typical adult human skeleton consists of 206 bones, not counting many small and often variable sesamoid bones and ossicles. Individuals may have more or fewer bones than this owing to anatomical variations. The most common variations include additional (i.e. supernumerary) cervical ribs or lumbar vertebrae. Sesamoid bone counts also may vary among individuals. The figure of 206 bones is commonly repeated, but must be noted to have some peculiarities in its method of counting. As noted below, the craniofacial bones are counted separately despite the synostoses, which occur naturally in the skull. Some reliable sesamoid bones (e.g., pisiform) are counted, while others (e.g., hallux sesamoids) are not. The count of bones also changes with age, as multiple ossific nuclei joined by synchondroses fuse into fewer mature bones, a process which typically reaches completion in the third decade of life.

Bones[edit]

Vertebral column[edit]

Chest[edit]

    • The vertebral column as a whole
  • The thorax
    • The sternum (1)
    • The ribs (24, in 12 pairs), including:
      • [7] pairs directly attached to the sternum(1st-7th pairs), also known as True ribs.
      • [3] pairs (8th,9th and 10th pairs), also known as False ribs are attached anteriorly to each other and to the 7th rib by cartilages and synovial joints
      • [2]pairs of floating ribs (11th and 12th pairs), have no anterior attachment.

Head[edit]

Arm[edit]

Leg[edit]