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Related Flashcards
Cards In This Set
| Front | Back |
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Which cells have a ruffled border and secrete hydrochloric acid?
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Osteoclasts
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The medullary cavity of a child's bone may contain:
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Red bone marrow
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The long bones of the limbs grow in length by cell proliferation and hypertrophy in:
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The metaphysis
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Osteoclasts are most closely related, by common descent, to
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Monocytes
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The walls between cartilage lucunae break down in the zone of:
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Bone deposition
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Which of these does not promote bone deposition? (dietary calcium, Vit D, parathyroid hormone, calcitonin, testosterone)
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Parathyroid hormone
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A child jumps to the ground from the top of a playground "jungle Gym." His leg bones do not shatter mainly b/c they contain:
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Collagen fibers
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One long bone meets another at its:
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Epiphysis
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Calcitriol is made from:
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7-dehydrocholesterol
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One sign of osteoporosis is:
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Kyphosis
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Calcium phosphate crystallizes in bone as a mineral called __________.
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Hydroxyapatite
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Osteocytes contact each other through channels called ________ in the bone matrix.
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Canaliculi
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A bone increases in diameter only by _______ growth, the addition of new surface lamellae.
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Appositional
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Most conpact bone is organized in cylindrical units called _______ , composed of lamellae encircling a central canal.
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Osteons
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The _____ glands secrete a hormone that stimulates cells to resorb bone and return its minerals to the blood.
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Parathyroid
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