Ribs

RIBS

The ribs are 12 pairs in number. They are elongated bones, in the shape of semi-arches, connecting the thoracic vertebrae to the sternum.

Ribs are classified into:

 7 Real Pairs: articulate directly to the sternum
 3 Properly Spoken False Pairs: articulate indirectly (cartilage)
 2 Floating False Pairs: are free

1st Rib

Top face

 Ventral Groove & #8211; subclavian vein passage
 Scalene Tuber & #8211; anterior scalene muscle insertion
 Dorsal Groove & #8211; subclavian artery passage
 Middle Scalene Muscle Tuber

2nd to 12th Ribs

Posterior End

 Rib Head & #8211; part of the rib that articulates with the spine (thoracic vertebrae)
 Rib Head Fovea
 Rib neck & #8211; flattened portion extending laterally to the head
 Rib Tuber & #8211; eminence on the posterior face of the junction of the neck and body
 Rib Tuber Fovea
 Costal Angle

Body (Diaphysis)

 Inner Face

 Outer Face

 Top Edge

 Bottom Edge

•  Costal Groove (- 2 Veins #8211; 1 Artery #8211; 1 Intercostal Nerve)

COSTA & #8211; BACK VIEW

Source: NETTER, Frank H .. Atlas of Human Anatomy. 2 ed. Porto Alegre: Artmed, 2000.

FIRST COAST AND TYPICAL COAST & #8211; UPPER VIEW

Source: NETTER, Frank H .. Atlas of Human Anatomy. 2 ed. Porto Alegre: Artmed, 2000.

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