# 5.1: The Vertebral Column and Thorax

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## Sternum

Manubrium – bone that is trapezoidal in shape, makes up the superior aspect of the sternum.

Jugular notch – concave notches on either side of the superior aspect of the manubrium, for articulation with the clavicles.

Corpus or body – flat, rectangular bone making up the major portion of the sternum. The lateral aspects contain the notches for the true ribs, called the costal notches.

Xiphoid process – variably shaped bone found at the inferior aspect of the corpus. Process may fuse late in life to the corpus.

## Clavicle

Sternal end – rounded end, articulates with manubrium.

Acromial end – flat end, articulates with scapula.

Conoid tuberosity – muscle attachment located on the inferior aspect of the shaft, pointing posteriorly.

## Ribs

Head, Neck, Tubercle, Shaft, and Costal groove.

## Scapulae

Ventral surface, Dorsal surface, Spine, Coracoid process, Acromion, Glenoid fossa, Axillary margin, Medial angle, and Vertebral margin.

Manubrium. Left anterior aspect, Right posterior aspect.

Sternum and Xyphoid Process. Left anterior aspect, Right posterior aspect.

Clavicle. Left side. Top superior and Bottom inferior.

First Rib. Left superior and Right inferior.

Second Rib. Left inferior and Right superior.

Typical Rib. Left inferior and Right superior.

Eleventh Rib. Left posterior view and Left superior view.

Twelfth Rib. Top shows anterior view and Bottom shows posterior view.

Scapula. Left side. Top anterior and Bottom posterior.

Scapula. Top lateral Bottom superior.

Clavicle

Sternum

Scapula

Ribs