ANATOMY

GENERAL ANATOMY

DIGESTIVE SYSTEM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
In humans, structures that release digestive secretions directly into the small intestine include both the
A
salivary glands and the pancreas
B
gall bladder and the stomach
C
stomach and the salivary glands
D
pancreas and the gall bladder
Explanation: 

Detailed explanation-1: -The gallbladder stores and concentrates bile, releasing it when it is needed by the small intestine. The pancreas produces the enzyme-and bicarbonate-rich pancreatic juice and delivers it to the small intestine through ducts.

Detailed explanation-2: -The pancreas empties its secretions into the duodenum through the major pancreatic duct (duct of Wirsung) in the duodenal papilla (papilla of Vater) and the accessory pancreatic duct a few centimetres away from it. Pancreatic juice contains enzymes that digest proteins, fats, and carbohydrates.

Detailed explanation-3: -After its passage through the stomach, ingested food turned into acidic chyme arrives in the first segment of the small intestine, a U-shaped tube called the duodenum. The duodenum produces hormones and receives secretions from the liver (bile) and pancreas (pancreatic juice containing digestive enzymes).

Detailed explanation-4: -Your pancreas creates natural juices called pancreatic enzymes to break down foods. These juices travel through your pancreas via ducts. They empty into the upper part of your small intestine called the duodenum. Each day, your pancreas makes about 8 ounces of digestive juice filled with enzymes.

Detailed explanation-5: -Exocrine cells in the mucosa of the small intestine secrete mucus, peptidase, sucrase, maltase, lactase, lipase, and enterokinase. Endocrine cells secrete cholecystokinin and secretin. The most important factor for regulating secretions in the small intestine is the presence of chyme.

There is 1 question to complete.