Within the kidneys, what membrane has microvilli?
A) glomerulus
B) basolateral membrane of renal tubule epithelial cells
C) apical membrane of renal tubule epithelial cells
D) basolateral membrane of peritubular capillary endothelial cells
E) apical membrane of vasa recta endothelial cells
Ans: C) apical membrane of renal tubule epithelial cells
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In the citric acid cycle,
A. 4 ATP molecules are formed. B. carbon dioxide is released. C. oxygen atoms are released. D. hydrochloric acid is released.
For which of the following organelles are the structure and function correctly described?
A) Ribosomes—membranous vesicles containing digestive enzymes B) Golgi apparatus—particles, composed of protein and RNA, which synthesize proteins C) Mitochondrion—nonmembranous structure that synthesizes proteins D) Endoplasmic reticulum—a network of interconnected membranes forming sacs and canals that packages protein molecules for secretion
Why is otitis media more common in children than in adults?
A. Children have shorter, more horizontal auditory tubes. B. Children have longer, more slanted auditory canals. C. Children have small openings in the tympanic membrane that allow introduction of bacteria. D. Children are more frequently exposed to pathogens that cause ear infections. E. Children have smaller, more flexible middle ear bones.
A function of the hypothalamohypophysial tract is to
A. move ADH from the hypothalamus to the anterior pituitary. B. move releasing hormones from the hypothalamus to the posterior pituitary. C. carry action potentials to the posterior pituitary causing the release of oxytocin. D. cause the release of insulin from the anterior pituitary. E. form a vascular connection from the hypothalamus to the posterior pituitary.