Blood is correctly classified as a(n)
A. organ.
B. tissue.
C. organ system.
D. intracellular fluid.
B
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Carbohydrates, proteins, and fats are classified as
A. micronutrients. B. piconutrients. C. macronutrients. D. nanonutrients.
Eating improperly prepared puffer fish can kill a person. Which chemical channels does the fish's toxin block?
A) Potassium B) Sodium C) Epinephrine D) Acetylcholine
Absorption of glucose from the gut lumen depends on all of the following except
A) the sodium-potassium pump in the basolateral membrane of the epithelial cell. B) cotransporter proteins in the apical membrane of the epithelial cell. C) higher sodium ion concentration in the lumen than in the epithelial cell. D) sodium-linked cotransport. E) emulsification forming small micelles.
Which muscle is under voluntary control?
A. Detrusor muscle B. Internal urethral sphincter C. External urethral sphincter D. None of these are correct.