TOPIC 24: HIGH-YIELD CONCEPTS-chap 6
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22 Terms
Which bone cell builds bone?
Osteoblast.
Which bone cell maintains bone?
Osteocyte.
Which bone cell breaks down bone?
Osteoclast.
Which bone cell produces osteoblasts?
Osteogenic cell.
Which structure contains osteocytes?
Lacunae.
Which structures connect osteocytes?
Canaliculi.
Which structure contains blood vessels and nerves in an osteon?
Central canal.
What is the basic unit of compact bone?
Osteon.
What is the basic structural feature of spongy bone?
Trabeculae.
Which bone tissue is dense and strong?
Compact bone.
Which bone tissue is lattice-like?
Spongy bone.
Which marrow produces blood cells?
Red marrow.
Which marrow stores fat?
Yellow marrow.
Which hormone increases blood calcium?
PTH.
Which hormone decreases blood calcium?
Calcitonin.
Which type of growth increases bone length?
Interstitial growth.
Which type of growth increases bone width?
Appositional growth.
Which type of ossification replaces cartilage with bone?
Endochondral ossification.
Which type of ossification forms bone directly from connective tissue?
Intramembranous ossification.
What happens when the epiphyseal plate closes?
It becomes an epiphyseal line and longitudinal growth stops.
What happens when osteoclast activity exceeds osteoblast activity?
Bone mass decreases.
What happens when osteoblast activity exceeds osteoclast activity?
Bone mass increases.