KP221 Study Guide - Quiz Guide: Suprasternal Notch, Thoracic Cavity, Thoracic Vertebrae
21 Oct 2018
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Document Summary
This lab focuses on the skeletal, cardiovascular, muscular, and nervous structures in the back, thorax, and abdominopelvic regions. This will include bone markings, joints, structures of the spinal cord, and larger blood vessels in the region. The sternum is the most anterior bone of the thoracic cavity, and is composed of three parts: manubrium, body, and xiphoid process. The manubrium is the most superior of the sternum and articulates with ribs one and two. The body of the sternum is the longest portion, with costal notches on the lateral borders to articulate with the costal cartilage. This will articulate with ribs 2 to 7. The most inferior portion of the sternum is called the xiphoid process. It is an attachment point of muscles, specifically the diaphragm. There are 12 pairs of ribs which make up the majority of the thoracic cage. All of these bones are classified as flat bones as they aid in protection of internal structures.
