The main regulator of serum phosphate levels is a transport process in the
A. liver.
B. kidneys.
C. pancreas.
D. small intestine.
E. large intestine.
B
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The process of forcefully expelling semen from the urethra is called
A) excitation. B) ejaculation. C) arousal. D) emission. E) None of the answers are correct.
Which chamber of the inner ear receives sound waves directly from the oval window?
A. Scala tympani B. Cochlear duct C. Vestibule D. Scala media E. Scala vestibuli
Answer the following questions true (T) or false (F)
1. The framework of the spleen is created by a network of reticular fibers made by reticular cells. 2. Adaptive, or specific, immunity consists of antimicrobial proteins and certain cells that respond quickly to pathogens within the first 12 hours after exposure. 3. Immunological memory can be formed by exposure to an antigen which is remembered by specific leukocytes and circulating antibodies.
Which of the following ions has the greatest affect on the autorhythmic capabilities of the myocardium?
a. Ca2+ b. K+ c. Na+ d. Cl-