NAD, a key coenzyme used in the process of producing ATP, is produced from which water-soluble vitamin?
a. riboflavin
b. vitamin B12
c. niacin
d. vitamin B12
Answer: c. niacin
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Which of the following produce intrinsic factor?
A) mucous neck cells B) zymogenic cells C) enteroendocrine cells D) parietal cells
Two opposing mechanisms determine alveolar expansion: ________ leads to alveolar expansion, while ________ opposes alveolar expansion.
A. positive pleural pressure; lung recoil B. negative pleural pressure; lung recoil C. lung recoil; negative pleural pressure D. lung recoil; positive pleural pressure
Enlargement of muscle due to weight lifting is a result of primarily
a. hypertrophy. b. hyperplasia. c. increased production of actin and myosin. d. increases in the number of cells. e. both (a) and (c) above.
What branches arise directly from the celiac trunk?
A. Left gastric and splenic arteries B. Left gastroepiploic and splenic arteries C. Left gastric and common hepatic arteries D. Left gastric, left gastroepiploic, and splenic arteries E. Left gastric, splenic, and common hepatic arteries