Which type of distal cell within kidney tubules and collecting ducts are responsive to aldosterone and antidiuretic hormone?
A. Type A cells
B. Type B cells
C. Intercalated endocrine cells
D. Principal cells
Answer: D
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The appendicular skeleton contains ________ bones.
A) 80 B) 206 C) 126 D) 64 E) 62
Which is a function of the gonadotropic hormones?
A. Inhibiting the release of growth hormone B. Inhibiting the release of prolactin C. Stimulating the release of gonadotropin-releasing hormone (GnRH) D. Stimulating the release of follicle-stimulating hormone (FSH) and luteinizing hormone (LH) E. Inducing the secretion of steroid hormones by the gonads in both males and females
Oxygen diffusion from the alveolus to the pulmonary capillary occurs because
A. alveolar PCO2 is greater than capillary PCO2. B. alveolar PO2 is less than capillary PCO2. C. carbon dioxide diffuses faster than oxygen. D. oxygen diffuses faster than carbon dioxide. E. alveolar PO2 is greater than capillary PO2.
Which statement is incorrect?
a. Cytotoxic T cells release chemicals that destroy targeted cells. b. Helper T cells enhance the activity of other T cells and B cells. c. Regulator T cells are believed to play an important role in tolerance to self-antigens. d. Helper T cells can combine only with host cells bearing both foreign antigen and class I MHC-encoded self-antigens on their surface. e. The majority of T cells are helper T cells.