Question

In: Anatomy and Physiology

This process is mostly involved in the mixing of food in the small intestine. segmentation pesitalsis...

This process is mostly involved in the mixing of food in the small intestine.

segmentation

pesitalsis

propulsion

none of the above

Which of the following is NOT one of the functions of the pancreas?

production of digestive enzymes

endocrine function

absorption of nutrients

exocrine function

All of the above are functions.

Please help me answer this questions

Solutions

Expert Solution

SEGMENTATION

Once the food enters the stomach through the esophagus, the mixing of food occurs in the stomach. Propulsion is the propelling of the food from one area of the digestive tract to another and it includes peristalsis. Peristalsis is thus the process that helps the food to propel through the gut and mixes food with gastric juice. Peristaltic constrictor waves are called as the mixing waves that become intense towards pyrolus. Thus peristalsis involves propulsive movements and is mainly involved in the mixing of food in the stomach.

Besides propulsive movements, the smooth muscles of the small intestine can also generate non-propulsive movements. Non-propulsive movements like segmentation are involved with the mixing of food in the small intestine. Thus segmentation involves mixing movement and occurs when circular smooth muscles of the small intestine move the food back and forth.

ABSORPTION OF NUTRIENTS

The pancreas is a hetercrine gland, which is both exocrine and endocrine gland. It secretes pancreatic juice which is released in the duodenum of the small intestine and helps in the digestion of food. It also produces two important hormones insulin and glucagon that controls blood sugar level. Absorption of nutrients, however, occurs in the small intestine with the help of villi like structures.


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