Which bone tissue is characterized by tightly packed osteons with central canals?

Which bone tissue is characterized by tightly packed osteons with central canals?

• A. Compact bone
• B. Spongy bone
• C. Hyaline cartilage
• D. Dense irregular connective tissue

Answer: (A)

Tightly packed osteons with central canals define compact bone. These osteons, or Haversian systems, are cylindrical units that surround a central canal containing blood vessels and nerves. Concentric lamellae form around this canal, and osteocytes live in lacunae connected by canaliculi, creating a highly organized, dense structure that gives bone its strength. Spongy bone, in contrast, has a lattice of trabeculae and lacks central canals, hyaline cartilage is a different tissue without calcified bone matrix, and dense irregular connective tissue is not bone tissue.

Tightly packed osteons with central canals define compact bone. These osteons, or Haversian systems, are cylindrical units that surround a central canal containing blood vessels and nerves. Concentric lamellae form around this canal, and osteocytes live in lacunae connected by canaliculi, creating a highly organized, dense structure that gives bone its strength. Spongy bone, in contrast, has a lattice of trabeculae and lacks central canals, hyaline cartilage is a different tissue without calcified bone matrix, and dense irregular connective tissue is not bone tissue.