Vitamin B is important for the production of red blood cells because it is utilized
in the synthesis of __________ .
Fill in the blank(s) with correct word
DNA
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Muscle A abducts the humerus and muscle B adducts the humerus. What is the relationship between the two muscles
A) The two muscles are agonists to each other. B) The two muscles are antagonists to each other. C) The two muscles are synergists to each other. D) One muscle is an agonist and the other is a synergist during the same movement. E) The two muscles are fixators to each other.
During the cephalic phase of gastric secretion,
A) the stomach responds to distention and a decrease in pH. B) the release of secretin inhibits parietal and chief cell action. C) the parasympathetic division of the ANS is active. D) the intestinal reflex inhibits gastric emptying. E) local reflexes in the submucosal and myenteric plexuses activate.
At high concentrations of antidiuretic hormone, the extent of water reabsorption in the collecting ducts is ________, causing urine output to ________.
A) high : decrease B) high : increase C) low : decrease D) low : increase E) unaffected : remain unchanged
Despite the strength of the dermis, it is subject to tearing. How might a person know that the dermis has been previously stretched and/or torn?
A) Tension, or cleavage, lines disappear. B) Generally permanent stretch marks, or striae, appear. C) Flexure lines appear where the skin has been stressed. D) The skin will darken due to increased melanin accumulation.