Osteology Day 1 Flashcards
What is the principle type of protein fiber in bone?
Collagen type I
What is the primary constituent of the ground substance?
Glycosaminoglycans
What is the frequent described deposit in bone?
Hydoxyapatite
What are the three responses of bone which allow it to be described as “living”?
Is has the ability to heal, to remodel under stressors and to age
What is the name given to the pattern of ossification in mesenchyme?
Intramembranous ossification
What is the name given to the pattern of ossification in cartilage?
Endochondral ossification
What is the timing for the appearance of ossification in cartilage?
From the second to fifth month in utero
What part of the skull is derived from endochondral ossification?
Chondrocranium
What bone of the appendicular skeleton is formed by both endochondral and intramembranous ossification?
The clavicle
What are the names given to the centers of ossification based on the time of appearance?
Primary centers of ossification appear before birth
Secondary centers of ossification appear after birth
What are the primary sources of variation observed in bone?
Gender variation (sexual dimorphism), ontogenetic variation (growth or age variation), geographic or population-based variation (ethnic variation) and idiosyncratic variation (individual variation)
What are the six more commonly used classifications of normal bone?
Long bones, short bones, flat bones, irregular bones, paranasal sinus or pneumatic bones and sesamoid bones
What is the name given to bone formed in a non-bone location?
heterotopic bone
What is the name given to bone formed from existing bone?
accessory bone
What are examples of short bones?
most of the bones of the carpus and tarsus
