Which of the following best describes hydroxyapatite?
A. A secretion of the osteoclasts
B. Dissolved minerals in the tissue fluid
C. Dissolved minerals in the blood plasma
D. Fibrous protein in the bone matrix
E. Calcium phosphate in the bone matrix
E. Calcium phosphate in the bone matrix
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The chemical symbol O=O means ________
A) the atoms are double bonded B) both atoms are bonded and have zero electrons in the outer orbit C) zero equals zero D) this is an ionic bond with two shared electrons
If fertilization of an ovum is to occur, it must encounter a spermatozoon in the uterine tube within the first ________ hours of its passage.
Fill in the blank(s) with the appropriate word(s).
What is one function of the type II alveolar cells?
A. Production of surfactant B. Lining the pleural space C. Secretion of mucus D. Make up the majority of the epithelial wall of the alveoli E. Phagocytizing bacteria and other foreign particles
The stretch of elastic components of a muscle adds to the increased tension during
A. multiple wave summation. B. twitch. C. all-or-none response. D. incomplete tetanus. E. None of the choices are correct.