Skeletal System Flashcards
What is the primary function of the skeletal system?
To provide support, protect organs, enable movement, store minerals, and produce blood cells.
What is the basic structural unit of bone?
Osteon – The structural unit of compact bone, also known as a Haversian system.
What are the two main divisions of the skeletal system?
Axial Skeleton (skull, spine, ribs) and Appendicular Skeleton (limbs, shoulders, pelvis).
What type of bone cell is responsible for forming new bone?
Osteoblasts – Cells that build and mineralize bone.
Which bone cells are responsible for bone resorption?
Osteoclasts – Cells that break down bone tissue.
What is the flexible tissue at the ends of bones that reduces friction?
Cartilage – A smooth, flexible tissue that covers and cushions joints.
What is the hollow part of bones where blood cells are produced?
Bone Marrow – Found in the centre of certain bones, producing red and white blood cells.
What type of joint allows movement in multiple directions?
Ball-and-Socket Joint – Allows rotational movement, found in the shoulder and hip.
What is the tough connective tissue that connects bones to each other?
Ligaments – Strong, fibrous bands that hold bones together at joints.
Which mineral is most abundant in bones?
Which mineral is most abundant in bones?
