What are the two main types of bone tissue?

Cortical and trabecular bone are indeed the two primary types of bone tissue. Cortical bone, also known as compact bone, forms the dense outer layer of bones and provides strength and stability. It is characterized by its tight, organized structure that withstands compressive forces.

Trabecular bone, often referred to as cancellous or spongy bone, is found primarily at the ends of long bones and within the interiors of others. This type of bone is lighter and has a more porous structure, which contributes to the overall flexibility and shock absorption capabilities of the skeletal system. The arrangement of trabecular bone allows it to distribute and manage forces more efficiently, especially in areas subject to varying stress.

The other options introduce terms that either overlap or misrepresent these types. "Elastic bone" is not a recognized type of bone tissue in the context of human anatomy. "Spongy" is often used interchangeably with "trabecular," which can create some confusion. The key distinction lies between the dense arrangement of cortical bone and the lattice-like structure of trabecular bone, thus making it essential to use the correct terminology for clarity and understanding in the study of musculoskeletal health.