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In anatomy, the ribs (la. costae) are those bones which form the rib cage, these surround the thorax (chest) of vertebrates. The function of the ribs is to protect the lungs, heart, and other internal organs
of the thoracic cavity.
The human skeleton has 24 ribs, 12 on each side (a small proportion
have one pair more or fewer). They are attached to the vertebral
column behind, and the first seven pairs are connected to the sternum in front
and are known as true ribs (C. verae, I-VII). The eighth, ninth, and tenth are attached in front to the
cartilaginous portion of the next rib above and are known as false ribs
(C. spuriae, VIII-X). The lower two, that is the eleventh and twelfth , are not attached in front and are called
floating ribs (C. fluitantes, XI-XII). The spaces between the ribs are known as intercostal spaces; they
contain the intercostal muscles, nerves, and
arteries. The rib cage allows for breathing due to its elasticity.
There is a legend that male humans have one rib fewer than female humans. This is
false, and originates from the Bible's description of the creation of Eve (from the rib of Adam).
The ribs are also the sides of a violin.
See also: breastplate,
zootomy, rigid-hulled inflatable boat
See also
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