Kupffer cells, one of the following is not true:

Correct Answer: C

Rationale: Kupffer cells are phagocytic and part of the sinusoidal wall, but they are in the lumen, not the space of Disse.

Correct Answer: A

Rationale: Enamel is the hardest substance in the human body, protecting the tooth's inner layers.

Correct Answer: C

Rationale: Brunner's glands are located in the submucosa of the duodenum.

Correct Answer: C

Rationale: The liver is the largest gland in the human body, performing numerous metabolic functions.

Correct Answer: A

Rationale: Amylase breaks down starch into maltose, a disaccharide.