All about human tongue is true EXCEPT:

Correct Answer: C

Rationale: The ventral surface of the tongue is smooth and covered by non-keratinized stratified squamous epithelium, not lingual papillae, which are on the dorsal surface.

Correct Answer: C

Rationale: Surface mucous cells secrete neutral to alkaline mucus, not acidic mucus, to protect the gastric mucosa.

Correct Answer: C

Rationale: Enteroendocrine cells release hormones into the bloodstream (endocrine function), not just the GIT lumen.

Correct Answer: C

Rationale: The submandibular gland has prominent striated ducts, like other major salivary glands.

Correct Answer: C

Rationale: Chief cells in the stomach are responsible for secreting pepsinogen, which is then activated to pepsin by the acidic environment created by HCl.