The cells lining the proximal convoluted tubule
A) are closely associated with unusual smooth muscle fibers.
B) reabsorb water and reabsorb or secrete sodium, potassium, hydrogen, and bicarbonate ions.
C) are not permeable to water and solutes.
D) are unusually tall, and their nuclei are clustered together.
E) reabsorb organic nutrients, plasma proteins, and ions from the tubular fluid.
E) reabsorb organic nutrients, plasma proteins, and ions from the tubular fluid.
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Collectively, reactions that build new molecules are known as
A) anabolic. B) metabolic. C) synthetic reactions. D) exchange reactions. E) catabolic.
A patient dies of a myocardial infarction because of death to the the left atrium and posterior wall of the left ventricle. A blockage in which coronary vessel resulted in her death?
A. Circumflex branch of the LCA B. Anterior interventricular branch of the LCA C. Right marginal branch of the RCA D. Posterior interventricular branch of the RCA
What cells decline in number during the final phase of HIV-1 infection, when an individual is said to have AIDS?
A) helper T (TH) cells B) B cells C) plasma cells D) memory B cells
What is the pH of pure water?
a. 8 b. 7 c. 6 d. 5 e. 4