Bone Structure and Composition Quiz

What is the primary function of compact bone?

• Resist breakage

• Contains osteons

• Absorbs shock

• Stores red marrow

What is the function of spongy bone?

• Resist breakage

• Absorbs shock

• Contains central canals

• Stores yellow marrow

What is the periosteum?

• A dense outer layer of compact bone

• A cavity containing yellow marrow

• A delicate membrane on internal surfaces of bone

• A membrane that covers the outer surface of bone

What type of cells are responsible for bone formation?

• Osteoclasts

• Osteocytes

• Osteoblasts

• Osteogenic cells

What is the function of osteoclasts?

• Connect lacunae

• Provide nutrients to bone

• Break down bone matrix

• Form new bone

What is the structural unit of compact bone?

• Lamellae

• Osteon

• Trabeculae

• Canaliculi

What is the role of collagen fibers in bone?

• Store calcium

• Provide hardness

• Connect blood vessels

• Provide tensile strength and flexibility

What is the main component of the inorganic part of bone?

• Osteogenic cells

• Hydroxyapatites

• Osteoid

• Collagen fibers

Where is red marrow found in adults?

• Medullary cavities of long bones

• Trabecular cavities of the heads of the femur and humerus

• Periosteum

• Central canals of compact bone

What is the function of Volkmann's canals?

• Connect blood vessels and nerves of the periosteum and central canal

• Store red marrow

• Contain osteocytes

• Provide tensile strength