All the following are contents of space of Disse except:

Correct Answer: D

Rationale: Kupffer cells are in the sinusoidal lumen, not the space of Disse, which contains Ito cells, plasma, and microvilli.

Correct Answer: C

Rationale: The epiglottis closes over the glottis during swallowing to prevent food from entering the trachea.

Correct Answer: B

Rationale: Peyer's patches in the small intestine produce lymphocytes, which are part of the immune system.

Correct Answer: B

Rationale: Ptyalin (salivary amylase) is secreted by salivary glands and works in a slightly acidic to neutral pH.

Correct Answer: B

Rationale: Bilirubin and biliverdin are bile pigments formed in the liver from hemoglobin breakdown.