Which of the following organ systems faces the greatest physiological challenge in the transitional period after birth?
A) Circulatory system
B) Nervous system
C) Respiratory system
D) Muscular system
E) Integumentary system
C
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The division of the autonomic nervous system that prepares the body for intense levels of activity and stress is the
A) somatomotor division. B) intramural division. C) craniosacral division. D) sympathetic division. E) parasympathetic division.
The triangular area within the urinary bladder that is delimited by the openings of the ureters and the urethra is called the ________.
Fill in the blank(s) with the appropriate word(s).
Which of the following statements regarding protein digestion and absorption is TRUE?
A. Cells in the stomach secrete enterokinase, which breaks down proteins into smaller peptides. B. Pepsin and trypsin are proteolytic enzymes that are most active in an acid pH. C. More acid is secreted during the digestion of a high-protein meal than during the digestion of a meal containing little protein. D. The presence of peptides in the stomach inhibits secretion of gastrin. E. Proteins are too large to pass through the pyloric sphincter into the small intestine.
ATP metabolism normally provides ________ percent of the ATP demands of a resting cell.
A) 25 B) 50 C) 70 D) 95 E) 100