Ribs 3 to 9 are typical ribs. Major landmarks of a typical rib are: head, neck, tubercle and body.

The head of each rib is wedge shaped and has two articular facets, which are separated by the crest of the head. The larger of the two facets is for articulation with the superior costal facet of its corresponding thoracic vertebral body, while the smaller facet articulates with the inferior costal facet on the body of the vertebra above.
The neck is a relatively flat portion of the rib that connects the head of the rib with its body.
The tubercle is a bony prominence located on the posterior side of each typical rib at the junction between the neck and body. It consists of two parts - a smooth articular part for articulation with the transverse process of the corresponding vertebra, and a rough non-articular part which provides an attachment site for the costotransverse ligament.
The body of a rib is thin, flat and curved. The costal angle is the most prominent part of the curve, and it also provides attachment sites for some deep back muscles to the ribs. The internal surface of the body is concave and contains the costal groove for the passage and protection of the intercostal nerve, artery and vein.

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Typical ribs