Bone Structure and Function Concepts

The video explores the microscopic structure of bones, focusing on compact and spongy bone. It details the structure of osteons, including lamellae, osteocytes, and canaliculi, and explains the blood supply system in bones. The video also covers the differences between compact and spongy bone, highlighting the roles of interstitial and circumferential lamellae.

What are the two types of bone mentioned in the video?

• Dense and porous

• Compact and spongy

• Rigid and flexible

• Hard and soft

Where is compact bone primarily located in a long bone?

• In the epiphyses

• In the medullary cavity

• In the periosteum

• In the diaphysis

What is the basic structural unit of compact bone?

• Trabeculae

• Osteon

• Lamellae

• Canaliculi

What structure in an osteon resembles a tree trunk?

• Lacunae

• Central canal

• Lamellae

• Canaliculi

What are the small spaces where osteocytes reside called?

• Lamellae

• Lacunae

• Canaliculi

• Haversian canals

What fills the gaps between osteons in compact bone?

• Periosteum

• Trabeculae

• Interstitial lamellae

• Circumferential lamellae

What is the function of circumferential lamellae?

• To connect osteocytes

• To smooth the outer periphery of bone

• To provide blood supply

• To store bone marrow

What is the role of the perforating canals in bone?

• To store nutrients

• To connect blood supply between osteons

• To form the outer layer of bone

• To house osteocytes

Where is the medullary cavity located?

• In the epiphyses

• In the diaphysis

• In the periosteum

• In the trabeculae

What is the primary function of the periosteum?

• To provide a smooth surface

• To store fat

• To connect muscles to bone

• To supply blood to the bone