Exam 1 - Study Guide Questions Flashcards
(463 cards)
what are the four basic tissues of the human body?
epithelial, muscle, neural and connective tissues
what is the function of each type of bone cell?
osteoblast - form bone, osteocyte - maintain or nurture bone, osteoclast - remodel bone
what is the primary constituent of the ground substance?
glycosaminoglycans
what types of glycosaminoglycans predominate in bone?
chondroitin sulfate, keratin sulfates and hyaluronic acid
what is the principle type of protein fiber in bone?
collagen type 1
what are the primary constituents of the bone
calcium, phosphate, citrate, carbonate ions
what is the most frequently described to deposit in bone
hydroxyapatite
bone is also the repository for what additional ions
sodium, magnesium, fluoride, lead, strontium and radium
what is Wolff’s law as it pertains to bone
living tissue will respond to stressors such as anxiety, tension or pressure; bone is formed or absorbed in response to the same stressors
what three responses of living bone or stressed in class
it has the ability to heal, to remodel under stress or such as anxiety, tension or pressure and to age
bone is the embryological derivative of which specific connective tissues
mesenchyme and or cartilage
what is the name given to the pattern of ossification and mesenchyme
intramembranous ossification
what is the timing for the appearance of intramembranous ossification
from the second to third month in utero
what part of the axial skeleton is primarily formed by intramembranous ossification
the skull
what is the name given to the pattern of ossification and cartilage
endochondral ossification
what is the timing for the appearance of ossification in cartilage
the 2nd to 5th month in utero
which skull bones are ossified by both endochondral and intramembranous ossification
the mandible sphenoid temporal and occipital bones
which 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 time of appearance
primary centers of ossification appear before birth secondary centers of ossification appear after birth
mature bone is described as being composed of what areas based on bone density
cortical or compact bone and spongy, cancellous or trabecular bone
what is the name of the outer fibro cellular covering of bone
the periosteum
what is the name given to the fibro cellular lining of bone
the endosteum
what are the primary sources of variation observed in bone
sexual dimorphism or gender variation, ontogenic variation or growth / age variation, graphic or population-based variation or ethnic origin, idios syncratic variation or individual variation
differences in the number or morphology of vertebrae within the population based on male and female variation is identified as which type of variation
sexual dimorphism or gender variation