Respuesta :
Answer:
Because the remains are from an adult younger than 40 years of age, and the hyaline cartilage does not preserver as well as bone. Letter A.
Explanation:
The xiphoid process begins as a structure made of hyaline cartilage at birth and childhood, slowly ossifying into a body part of the sternum. The ossification of the xiphoid process is so slow that it often does not end until an individual reaches the age of 40.
The main reason the xiphoid process in the sternum might be missing in a set of human remains is that in remains from an adult under 40 years of age, the hyaline cartilage is not as well preserved as bone.
The xiphoid is:
- The smallest and most variable element of the sternum
- It is located at the lower end of the sternum
- At birth, it is a piece of cartilage that begins to ossify from the age of three.
- After 24 years of life, the xiphoid process ossifies completely and joins the body of the sternum
In medicine it is used as a benchmark for:
- Indicates the lower limit of the chest cavity ahead
- Presents a localization point for organs such as the heart, liver, and diaphragm
According to the above, the main reason why the xiphoid in the sternum could be missing is that it ossifies at 24 years of age. So in a set of human remains of an adult under 40 years of age and the hyaline cartilage would no longer exist as cartilage but as bone.
Learn more in: https://brainly.com/question/12886020
