Which of the hormones listed below has the most profound direct effect to stimulate the increased resorption of bone when plasma Ca2+ levels decrease?
A. thyroxine
B. parathyroid hormone
C. calcitonin
D. cortisol
E. insulin
B
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Which of the following statements is correct regarding RNA?
A) rRNA is always attached to the rough ER. B) If the base sequence of DNA is ATTGCA, the messenger RNA template will be UCCAGU. C) There is exactly one specific type of mRNA for each amino acid. D) Messenger RNA, transfer RNA, and ribosomal RNA play a role in protein synthesis.
The ________ is sometimes called the expiratory center.
Fill in the blank(s) with the appropriate word(s).
Blood pressure in the glomerulus is ________ than in other capillaries due to the relatively large diameter of ________ arterioles.
A. higher; afferent B. lower; efferent C. lower; afferent D. higher; efferent
The fluid within the articular (joint) cavity is called fluid.