What digestive secretions are primarily regulated by?
nerve and hormonal signals
The intestinal mucosa produces most of the secretions that enter the small intestine (the mucosa of the small intestine produces secretions that primarily contain mucus, electrolytes, and water). The secretions of the liver and the pancreas also enter the small intestine and play essential roles in the process of digestion.
The various hormonal secretions in the digestive process include: Secretin: From duodenum Chole-Cystokinin: From Gall Bladder Leptin: From Stomach These hormones help in the secretion of digestive enzymes and the CCK improves perisatalsis and amylase and lipase secretion from the liver. Leptin from stomach gives filling sensation from the stomach.
Which nervous system division controls smooth muscle contraction and secretion in the digestive system?
Autonomous nervous system. Consisting of Parasympathetic nervous system and Sympathetic nervous system. Parasympathetic nervous system increases the secretions of digestive tract and Sympathetic system decreases the secretions. Parasympathetic system increases the contractions of smooth muscles and increases the rate and force of peristalsis and Sympathetic system does vise verse.
The digestive juices are the secretions of the digestive tract that break down food. They include saliva, gastric juice, pancreatic juice, bile, and intestinal juice. The digestive juices are secreted by different organs, vary widely in chemical composition, and play different roles in the digestive process. Each is constantly produced by the body in small amounts, but the presence of food as it passes through the digestive tract causes increased production and secretion.
Basically a digestive enzyme helps to break down the food whether it is in the mouth (I forget the enzyme present in saliva) or in the intestine, Digestive hormones serve to regulate digestion for example the pH in the stomach is regulated by Gastrin. I'm guessing that you goto the University of Sydney because I have this very same question in an assignment
It is probably more green because logically, what you put in is what will come out. People who are primarily vegetarians will have a looser, colorful stool because the fibrous veggies they eat provide the ability to "drop a deuce" more easily. (Natural Fiber) Its not that any feces is abnormal, it just depends on how well regulated the digestive system is and what you eat to make it come out.