Posterior Rib Anatomy

The ribs partially enclose and protect the chest cavity where many vital organs including the heart and the lungs are located. One facet articulates with the numerically corresponding vertebrae and the other articulates with the vertebrae above.

Anterior Thoracic Wall The Big Picture Gross Anatomy 2e

122 123a rib from the middle of the series should be taken in order to study the common characteristics of these bones.

Posterior rib anatomy. Each rib has two extremities a posterior or vertebral and an anterior or sternal and an intervening portionthe body or shaft. The typical ribs have a generalised structure while the atypical ribs have variations on this structure. The rib cage is collectively made up of long curved individual.

This part of the muscle is thought to elevate the ribs. The 8 th to 10 th ribs converge anteriorly to each other via costal cartilages and eventually to the seventh rib therefore their connection to the sternum is indirect and hence. There are two classifications of ribs atypical and typical.

The typical rib consists of a head neck and body. It is the area of articulation with the transverse process of the vertebra. Common characteristics of the ribs figs.

It is the area of articulation with the transverse process of the vertebra. The part of the muscle is thought to depress the ribs. The head is wedge shaped and has two articular facets separated by a wedge of bone.

Tubercle small elevation on the posterior surface of the rib at the junction of the head and neck. The first seven pairs of ribs are true ribs as they are attached to the sternum directly by costal cartilages anteriorly false ribs. The superior fibres originate from the spinous processes of the c7 to t3 vertebrae and attach to the superior borders of ribs two to four.

Rib Cage Anatomy Britannica