Compact & Spongy Bone Flashcards
What are the two types of bone tissue?
Compact bone & Spongy (Cancellous) bone
What is the primary function of compact bone?
Strength, support, and protection
What is the primary function of spongy bone?
Weight reduction, shock absorption, and hematopoiesis
What mineral gives bone its hardness?
Hydroxyapatite (Calcium Phosphate)
What protein gives bone flexibility?
Collagen fibers
What is the structural unit of compact bone?
Osteon (Haversian system)
What type of bone contains trabeculae?
Spongy bone
Where is compact bone primarily located?
Under periosteum & diaphysis of long bones
Where is spongy bone primarily found?
Ends of long bones (epiphyses) & interior of some bones
What type of marrow is found in spongy bone?
Red bone marrow (for blood cell production)
What are the spaces in spongy bone called?
Trabeculae spaces
What type of bone is highly vascularized?
Both compact and spongy bone
What are the small cavities where osteocytes reside?
Lacunae
What is the function of the central (Haversian) canal in compact bone?
Houses blood vessels & nerves
How do osteocytes receive nutrients in compact bone?
Via canaliculi (small channels connecting lacunae)
