Thoracic cage

Thoracic Cage

The Thoracic Cage (pronunciation: tho-RAS-ik kāj), also known as the Rib Cage, is an essential part of the human anatomy that provides structure and protection to vital organs within the thorax.

Etymology

The term "Thoracic" originates from the Greek word "thorax," meaning chest, while "Cage" is derived from the Latin word "cavea," meaning enclosure or cavity.

Structure

The Thoracic Cage is composed of the sternum, 12 pairs of ribs, and 12 thoracic vertebrae. It forms the main structure of the chest, excluding the skin, muscles, and fascia.

Sternum

The Sternum (pronunciation: STUR-num), commonly known as the breastbone, is a long, flat bone located in the center of the chest. It connects to the ribs via cartilage and forms the front of the rib cage.

Ribs

The Ribs (pronunciation: ribz) are a set of 12 pairs of long, curved bones which surround the chest and give the thoracic cage its characteristic shape. They are connected to the sternum and the thoracic vertebrae.

Thoracic Vertebrae

The Thoracic Vertebrae (pronunciation: tho-RAS-ik VER-te-bray) are a set of 12 vertebrae that connect with the ribs and form the rear part of the thoracic cage.

Function

The primary function of the Thoracic Cage is to protect the heart, lungs, and major blood vessels from physical damage. It also provides support for the bones of the shoulder girdle and aids in the process of respiration.

Related Terms

• Thorax
• Sternum
• Ribs
• Thoracic Vertebrae
• Respiration

External links

• Medical encyclopedia article on Thoracic cage
• Wikipedia's article - Thoracic cage

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