HUMAN RIBCAGE Meaning and
Definition
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The human ribcage is an anatomical structure that serves as a protective framework for the internal thoracic organs, most notably the heart and lungs. Composed primarily of bones called ribs, it forms an arched enclosure that extends from the thoracic vertebrae of the spine to the sternum at the front of the chest. The ribcage plays a crucial role in safeguarding vital organs from external forces and impacts.
Typically, the human ribcage consists of twelve pairs of ribs. These ribs are categorized into true ribs (pairs 1-7), false ribs (pairs 8-12), and floating ribs (pairs 11-12) based on their attachment to the sternum. True ribs directly articulate with the sternum via cartilaginous connections, while false ribs are indirectly connected either by attaching to the cartilage of the rib above or not attaching at all. Floating ribs, on the other hand, have no attachment to the sternum.
The ribs are flat, curved bones that form a cage-like structure. Each rib possesses a head, neck, body, and costal cartilage. The head articulates with the vertebral column, while the costal cartilage allows for flexibility and movement. The ribcage expands and contracts during breathing, providing the necessary space for the lungs to inflate and deflate.
Overall, the human ribcage serves as a protective shield for vital organs, contributes to the mechanics of respiration, and maintains the structural integrity of the chest.
Etymology of HUMAN RIBCAGE
The word "human ribcage" consists of two parts: "human" and "ribcage".
"Human" is derived from the Latin word "humanus", which originally meant "of or belonging to a person" or "characteristic of a human being". This Latin term is ultimately connected to the Proto-Indo-European root "ghomon", meaning "earth" or "ground". The word "human" has been in use since the late Middle English period.
"Ribcage" is a combination of two words: "rib" and "cage".
"Rib" comes from the Old English word "ribb", which has roots in the Proto-Germanic "rebjo" and the Proto-Indo-European root "rebh-" meaning "bow or bend". "Rib" has been in use since the Old English period.
