Question

Which layer of the stomach contains the gastric pits that secrete mucous, acid, and digestive enzymes?

a. serosa
b. muscularis externa
c. mucosa
d. submucosa

Answer 1

The layer of the stomach that contains the gastric pits that secrete mucous, acid, and digestive enzymes is called the mucosa. The mucosa is the innermost layer of the stomach and it lines the stomach cavity. It consists of specialized cells that produce gastric juices, including mucous cells, parietal cells, and chief cells. These gastric juices help with the digestion of food and the breakdown of nutrients.

Answer 2

The gastric pits that secrete mucous, acid, and digestive enzymes are located in the mucosa layer of the stomach.

Step-by-step explanation:

The layer of the stomach that contains the gastric pits which secrete mucous, acid, and digestive enzymes is the mucosa.

The mucosa is the innermost layer of the stomach, featuring the epithelial lining that houses the gastric pits. These pits are the entrance to the gastric glands, responsible for secreting gastric juice, a complex digestive fluid. The mucosal layer offers crucial protection against the corrosive nature of gastric acid. It does this through a coating of bicarbonate-rich mucus and tight junctions between epithelial cells. Furthermore, the constant renewal of the epithelium helps maintain the integrity of the mucosa. This layer is vital for the stomach's ability to continue digestion without damaging its own tissue.

The gastric pits, which mark the entry to each gastric gland, are found in the mucosa. These pits secrete a complex digestive fluid called gastric juice, which contains mucous, acid, and digestive enzymes.