Question

identify the structure labeled \e.\ options: manubrium, body of sternum, costal cartilage, xiphoid process

Explanation:

The sternum (breastbone) has three parts: manubrium (top), body (middle), and xiphoid process (bottom). The structure labeled "e" is the middle part of the sternum, which is the body of the sternum. Manubrium is the upper part (labeled earlier like "b" maybe), costal cartilage is the blue - like structures connecting ribs, and xiphoid process is the lower tip (labeled "f" or "g" here). So the correct identification for "e" is Body of sternum.

Answer:

Body of sternum