Endogenous opioid molecules reduce pain sensation. Morphine, a common analgesic, is an agonist for endogenous opioid receptors.
Answer the following statement true (T) or false (F)
True
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All of the following are true concerning enzymes except that they
A) are proteins.
B) function as biological catalysts.
C) lower the activation energy required for a reaction.
D) affect only the rate of a chemical reaction.
E) are consumed during the reaction.
Which of the following statements about bone remodeling and repair is correct?
A. Bone remodeling involves removal of old bone by osteoblasts. B. The rate of bone remodeling increases in the elderly. C. Exposure of a bone to increased mechanical stress can lead to bone remodeling. D. Bone remodeling does not involve the activity of the osteoclasts and the osteoblasts. E. As a long bone increases in diameter, the size of the marrow cavity decreases.
What chemical ingested or synthesized by the body is necessary for calcium absorption from the intestines?
A. growth hormone B. calcitonin C. parathyroid hormone D. vitamin D E. sex hormones
The larger of the two distal leg bones is the ________.
Fill in the blank(s) with the appropriate word(s).