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Rib - Rib Anatomy | | Rib - Rib Anatomy: Encyclopedia II - Rib - Rib Anatomy | | |
Rib - Typical ribs.
The third through ninth ribs are "typical ribs" since they share the same structure. They each have a head that has two facets separated by a crest. One head articulates with the rib's corresponding vertebra and one head articulates with the vertebra superior (above) to it. They have a neck that connects the head with the shaft. The neck meets the shaft at a tubercle. The shaft is thin, flat, and curved. The curve is most prominent at the costal angle. The concave (inside) surface has a groove to protect the intercostal nerve and vessels.
See also: Rib, Rib - Types of Ribs, Rib - Rib Anatomy, Rib - Typical ribs, Rib - Atypical ribs, Rib - Rib Fractures and Associated Injuries, Rib - Bifid rib bifurcated rib, Rib - Biblical Legend | | | Rib, Rib - Atypical ribs, Rib - Biblical Legend, Rib - Bifid rib bifurcated rib, Rib - Rib Anatomy, Rib - Rib Fractures and Associated Injuries, Rib - Types of Ribs, Rib - Typical ribs, Bone terminology, Terms for anatomical location | | |
| | | Rib: Encyclopedia II - Rib - Rib Anatomy
Rib - Rib Anatomy
Rib - Typical ribs
The third through ninth ribs are "typical ribs" since they share the same structure. They each have a head that has two facets separated by a crest. One head articulates with the rib's corresponding vertebra and one head articulates with the vertebra superior (above) to it. They have a neck that connects the head with the shaft. The neck meets the shaft at a tubercle. The shaft is thin, flat, and curved. The curve is most prominent at the costal angle. The concave (inside) surface has a groove to protect the intercostal nerve and vessels.
Rib - Atypical ribs
The atypical ribs are the 1st, 2nd, and 10th to 12th.
- The first rib has a shaft that is wide and nearly horizontal, and has the shapest curve of the seven true ribs. Its head has a single facet to articulate with the first thoracic vertebra (T1). It also has two grooves for the subclavian vessels, which are separated by the scalene tubercle.
- The second rib is thinner, less curved, and longer than the first rib. It has two facets to articulate with T2 and T1, and a tubercle for muscles to attach to.
- The 10th to 12th ribs have only one facet on their head, and the 11th and 12th ribs are short with no necks or tubercles.
Other related archivesAdam, Bible, Bifid rib, Bone terminology, Eve, Latin, T1, Terms for anatomical location, abnormality, anatomy, arteries, bones, brachial plexus, breathing, cartilaginous, chest, clavicle, congenital, diaphragm, floating ribs, heart, herring, human skeleton, legend, lungs, muscles, nerves, neurological, organs, respiratory, sternal, sternum, subclavian vessels, thoracic cavity, thorax, unilateral, vertebra, vertebral column, vertebrates
 Adapted from the Wikipedia article "Rib Anatomy", under the G.N U Free Docmentation License. Please also see http://en.wikipedia.org/wiki |
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