Introduction to the Body

Directional Terms

Directional terms describe the positions of structures relative to other structures or locations in the body, it is necessary to learn some useful terms for describing body structure.

Body cavities and their Contents

There are 4 main body cavities, these are:


The head consists of:


The chest or thoracic cavity contains:

These organs are protected by the thoracic cage, and this is formed by the thoracic vertebrae, the ribs, the costal cartilages, and the sternum


The abdomen contains:


The pelvis contains:

Planes of the Body

Although the planes of the body are not generally used in the pre-hospital environment I thought I'd add them as they come under the same heading of anatomical directional terms.



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