In the context of the human skeleton, what are the plates that make up the carapace called?

• A. Scutes
• B. Trabeculae
• C. Osteons
• D. Lamellae

Answer: (A)

Verified step by step guidance

1. Begin by understanding the context of the problem, which involves the human skeleton and specifically the structure referred to as the 'carapace'. In human anatomy, the term 'carapace' is not commonly used, but it can be related to structures that provide protection, similar to a turtle's shell.
2. Identify the terms provided as possible answers: Scutes, Trabeculae, Osteons, and Lamellae. Each of these terms relates to different aspects of bone structure or function.
3. Scutes are typically associated with reptiles and birds, referring to the bony external plates or scales. In humans, this term is not applicable to the skeletal structure.
4. Trabeculae are the small, often rod-like structures found within spongy bone, providing structural support and housing bone marrow. They are not plates but rather part of the internal bone architecture.
5. Osteons are the fundamental functional units of compact bone, consisting of concentric layers called lamellae. Lamellae are the thin plates or layers of bone tissue that make up the osteons, providing strength and structure to the bone. Therefore, in the context of the human skeleton, lamellae are the plates that contribute to the structure of compact bone.