Which Is Correct

question 54

Multiple Choice

Which is correct?

• A)4 p.m.
• B)four p.m.

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Definitions:

Mediastinum

An area in the chest between the lungs that contains the heart, esophagus, trachea, thymus, and several large blood vessels.

Sternal Region

The sternal region refers to the area of the body located at the middle of the chest, where the sternum or breastbone is situated.

Breastbone

Also known as the sternum, it is a long flat bone located in the central part of the chest, connecting the rib bones.

Lumbar Region

The lower part of the spine between the diaphragm and the sacrum, consisting of five vertebrae.