Which of the following is a first-class lever?
A) The humeroulnar joint
B) The talocrural joint
C) The atlanto-occipital joint
D) The knee joint
E) Any metacarpophalangeal joint
C
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In connective tissue, the extracellular matrix consists of
A. cells and ground substance. B. cells and protein fibers. C. protein fibers and ground substance. D. ground substance only. E. ground substance and intracellular fluid.
Any factor that alters water balance will also alter electrolyte balance.
a. true b. false
In addition to GH, _______ is/are essential for normal growth
a. insulin b. thyroid hormone c. androgens d. estrogen e. all of the above
The bicarbonate system is composed of H2CO3 and HCO3-. Which statement accurately describes these molecules?
A. H2CO3 and HCO3- are both weak acids. B. H2CO3 is a weak acid, and HCO3- is a weak base. C. H2CO3 is a weak base, and HCO3- is a weak acid. D. H2CO3 and HCO3- are both strong bases. E. H2CO3 is a strong base, and HCO3- is a weak acid.