Bone Tissue Structure and Function

The video tutorial explains the complex structure of bone tissue, highlighting its two main types: compact and spongy bone. Compact bone is characterized by osteons and a central haversian canal, which houses nerves and blood vessels. The matrix is composed of inorganic salts and organic material, providing strength and support. Spongy bone, lacking osteons, features a lattice-like structure called trabeculae, which helps distribute stress. The video also covers the roles of various components like lamellae, lacunae, and canaliculi in maintaining bone health.

What are the two main types of bone tissue?

• Compact and spongy bone

• Dense and loose bone

• Hard and soft bone

• Rigid and flexible bone

What is the central canal in an osteon called?

• Canaliculi

• Lacuna

• Haversian canal

• Volkmann canal

What are hydroxyapatite crystals composed of?

• Calcium and phosphate

• Fluoride and sulfate

• Sodium and magnesium

• Collagen and protein

What is the role of the ground substance in bone matrix?

• To provide rigidity

• To store nutrients

• To facilitate movement

• To support and adhere cellular elements

Where are osteocytes located in bone tissue?

• In the central canal

• In the lacunae

• In the trabeculae

• In the periosteum

What is the function of canaliculi in bone tissue?

• To house blood vessels

• To store minerals

• To connect osteons

• To provide nutrient pathways

What covers the outside of bones?

• Lacunae

• Trabeculae

• Periosteum

• Endosteum

What connects central canals to one another?

• Haversian canals

• Volkmann canals

• Canaliculi

• Lacunae

What is the appearance of spongy bone?

• Layered and concentric

• Smooth and flat

• Lattice-like with trabeculae

• Solid and dense

How does spongy bone handle stress?

• By absorbing it in the central canal

• By distributing it throughout the framework

• By redirecting it to the compact bone

• By compressing the trabeculae