What is a function of saliva?
Absorbing fat from ingested food
Breaking food into smaller pieces
Beginning the chemical digestion of carbohydrates
Cleansing the esophagus
The Correct Answer is C
A. Absorbing fat from ingested food: saliva does not absorb fat; lipid processing occurs later (emulsification by bile, digestion by lipase).
B. Breaking food into smaller pieces: Incorrect (partly true) -mastication (teeth and jaw) breaks food down; saliva lubricates and moistens but does not mechanically triturate alone.
C. Beginning the chemical digestion of carbohydrates: saliva contains salivary amylase, which begins starch digestion into smaller sugars.
D. Cleansing the esophagus: saliva helps cleanse the mouth and aids swallowing, but it does not “cleanse the esophagus” as a primary function.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is {"dropdown-group-1":"D"}
Explanation
Correct answer: Eosinophil
Eosinophils characteristically have a bilobed nucleus and large, refractile orange-red cytoplasmic granules that stain with eosin; those features identify the pictured granulocyte as an eosinophil (cells involved in parasitic defense and allergic responses).
Correct Answer is D
Explanation
A. The formation of a network of fibrin fibers: This describes fibrin clot formation/coagulation, not diapedesis.
B. The release of the contents of cytoplasmic granules: This is degranulation (e.g., in mast cells, neutrophils), not diapedesis.
C. The ability to rapidly divide, increasing the number of a particular leukocyte: This describes cell proliferation, not diapedesis.
D. The ability of cells to squeeze between cells of capillary walls: Diapedesis -leukocytes migrating out of the bloodstream by squeezing between endothelial cells.
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