How many pairs of salivary glands produce saliva, which contains amylase to start digestion of dietary starch?

Correct Answer: B

Rationale: Humans have three pairs of salivary glands (parotid, submandibular, sublingual) that produce saliva containing amylase; not five as originally asserted.

Correct Answer: C

Rationale: The lamina propria of the hard palate is directly continuous with the periosteum of the underlying bone, providing a firm attachment. Loose areolar tissue is more typical in softer mucosal areas.

Correct Answer: A

Rationale: Filiform papillae have secondary papillae with separate epithelial caps extending from the primary papillae, unlike other papillae types.

Correct Answer: C

Rationale: Gustatory cells are centrally located within the taste bud, surrounded by supporting cells, not peripheral.

Correct Answer: C

Rationale: The isthmus contains stem cells, surface epithelial cells, and parietal cells, but chief cells are found deeper in the gland body and base.