Which motor activity is primarily responsible for mixing and...

Food and chyme are pushed through the digestive system by:

Rationale: Peristalsis refers to the rhythmic contractions of smooth muscle that propel food and chyme through the digestive tract.

Striated ducts, the following is true except:

Rationale: Striated ducts have basal acidophilic striations due to mitochondria, not basophilic granules.

Amino acids are absorbed in-

Rationale: Amino acids are absorbed into the blood capillaries of the villi in the small intestine.

The diagram shows a section through a villus. Y X What is a function of structure X and of structure Y?

Rationale: Structure X (epithelial cells) absorbs amino acids, while structure Y (goblet cells) secretes mucus.

Which of the following is a common passage in swallowing food and breathing-

Rationale: The pharynx serves as a common pathway for both food (to the esophagus) and air (to the larynx).

Digestive System Multiple Choice Questions