________ refers to microscopic projections in the walls of the small intestine.
A. Papillae
B. Villi
C. Rugae
D. Cilia
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________ is the salivary gland near the ear.
A. Submandibular
B. Sublingual
C. Parotid
D. Tonsil
________ refers to ring of muscle at the end of the stomach.
A. Pyloric sphincter
B. Uvula
C. Lower esophageal sphincter
D. Cardiac sphincter
________ refers to soft, inner section of a tooth.
A. Dentin
B. Enamel
C. Pulp
D. Gum
________ is the chemical that speeds up reactions and helps digest foods.
A. Triglyceride
B. Amino acid
C. Enzyme
D. Chyme
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