Ribs

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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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