Bone Structure and Function Concepts

The video tutorial explores the microscopic structure of bones, starting with the largest magnification to observe osteocytes in lacunae and their communication via canaliculi. It then examines the osteon, highlighting the osteonic canal, blood vessels, and nerves. The tutorial compares compact and spongy bone tissues, noting their patterns and density. Finally, it discusses the anatomy of long bones, including the medullary cavity, periosteum, and epiphyses, emphasizing their roles in bone nourishment and articulation.

What are the small spaces called where osteocytes are housed?

• Periosteum

• Canaliculi

• Lacunae

• Osteons

What is the function of canaliculi in bone structure?

• To connect osteons

• To house blood vessels

• To allow communication between osteocytes

• To store minerals

What is the central canal in an osteon called?

• Canaliculi

• Perforating canal

• Osteonic canal

• Lacuna

Which structure connects one osteonic canal to another?

• Lacunae

• Perforating canals

• Canaliculi

• Epiphyses

What is the primary difference between compact and spongy bone?

• Compact bone is denser and has a regular pattern

• Spongy bone is more regular and dense

• Spongy bone is denser and has a regular pattern

• Compact bone is less dense and irregular

What is the periosteum?

• A type of bone cell

• The bone coating continuous with ligaments and tendons

• A type of spongy bone

• The central canal in an osteon

What is the primary function of the periosteum?

• To house osteocytes

• To connect bones to muscles and other bones

• To provide a blood supply

• To store fat

What is the function of the medullary cavity in long bones?

• To store fat

• To connect bones to muscles

• To contain the largest blood vessels and nerves

• To house osteocytes

What are the expanded ends of long bones called?

• Periosteum

• Osteons

• Epiphyses

• Diaphysis

What is the role of cartilage at the ends of long bones?

• To house blood vessels

• To provide a smooth surface for articulation

• To connect to ligaments

• To store minerals