Osteology Flashcards
What are the four basic tissues of the human body?
Epithelial, Muscle, Neural, and Connective tissue
What is the function of each type of bone cell?
Osteoblast: Form new bone
Osteocyte: maintain or nurture bone
Osteoclast: remodel bone
What is the primary constituent of the ground substance?
Glycosaminoglycans (GAGs)
What is the principal type of protein fiber in BONE?
Collagen Type 1
What is the most frequently described deposit in bone?
Hydroxyapatite
What is Wolff’s Law as it pertains to bone?
Living tissue will respond to stressors; bone is formed or absorbed in response to stress
What are the three responses of bone that allow it to be described as “living”?
It has the ability to heal, to remodel under stressors and to age.
What is bone the embryological derivative of?
Mesenchyme or cartilage
What is the name given to the pattern of ossification in mesenchyme?
Intramembranous ossification
What is the timing for the appearance of intramembranous ossification?
From the second to third month in utero
What is the timing for the appearance of ossification in cartilage?
From the second to fifth month in utero
What part of the skulll is derived from endochondral ossification?
Chondrocranium
Which bone of the appendicular skeleton is formed by both endochondral and intramembranous ossification?
Clavical
What are the primary sources of variation observed in bone?
sexual dimorphism, ontogenetic variation, geographic r population-based variation and idiosyncratic variation.
What is another name for sexual dimorphism?
Gender variation
