University:
Kentucky State University
Course:
BIO 301 | Human Anatomy
Academic year:

2021
Views:

167

Pages:

2
Author:

FrextWhestembki

The Ribs: Each rib is formed of: 1) Head: which articulates with the vertebrae. 2) Neck: a constricted region immediately after the head. 3) Tubercle: this contains an articular facet for the transverse process. 4) Angle: area where the shaft bends forwards. 5) Shaft (Body). 6) Costal groove: this runs along the inferior border of the inner surface of the shaft. The Ribs:     12 pairs of ribs give structural support to the sides of the thoracic cavity The upper 7 pairs are called true ribs because they’re attached to the sternum through their own costal cartilage. Pairs 8-10 are called false ribs because they’re attached anteriorly to each other and to the seventh rib by means of their costal cartilages. Pairs 11 and 12 are called floating ribs because they have no anterior attachment.