The Musculoskeletal System

Amino Acids & Protein Structure

Oxygen Transporters

Tissues and Histology

Cartilage is primarily collagen, and bone mainly consists of collagen in combination with calcium phosphate salt called apatite. As you can see, the protein collagen is crucial to the structure of skeletal connective tissue.

Remember, bone and cartilage are living tissues, connective tissue, living cells within an external matrix.