Rib cage facts for kids
Quick facts for kidsRib cage
|The human rib cage. (Source: Gray's Anatomy of the Human Body, 20th ed. 1918.)|
|Projection on the rib cage of the heart, lungs and diaphragm. The shaded areas indicate the extent of the pleural cavities not filled by the lungs.|
It protects a person's internal organs from damage.
The bones that are connected to the sternum directly are called true ribs, and the bones that are connected to the sternum indirectly, through the seventh bone, are called false ribs (eighth, ninth, and tenth bones), and the bones which are not connected to the sternum, and is connected to the back bone, are called floating ribs.
If these floating ribs were connected to the sternum, we could not breathe properly, as the chest needs space to expand and decrease. The rib cage is also called the thoracic cavity.
The rib cage has a major function in the respiratory system.
Ribs are described based on their location and connection with the sternum. All ribs are attached behind to the thoracic vertebrae and are numbered accordingly one to twelve. Ribs that articulate directly with the sternum are called true ribs, whereas those that connect indirectly via cartilage are termed false ribs. Floating ribs (eleven and twelve) are not attached to the sternum at all.
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Rib cage Facts for Kids. Kiddle Encyclopedia.