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Digestive System
Digestive System is the category for questions regarding the breakdown and absorption of food-stuffs in our alimentary canal. Questions about the stomach and intestines can be included in this category.
7,599 Questions
Is dentin is a layer of connective tissue that acts as a barrier to protect the pulp?
Yes, dentin is a layer of connective tissue that acts as a barrier to protect the pulp.
What is the outcome of the food if it passes to slowly or too quickly through the colon?
If food passes too slowly through your colon, you are constipated. If food passes too quickly through your colon, you have diarrhea. If you have either of these symptoms for a long period of time, you should contact your doctor.
It is called gastro paresis
What is in a octopus digestive system?
This page should explain it: http://tolweb.org/accessory/Cephalopod_Digestive_System?acc_id=1993
Why do indigestion remedies sometimes make you burp?
An indigestion remedy is required to neutralize the acidity present in the stomach and esophagus, to do this a reaction of a base such as Calcium carbonate (CaCO2) to the abundant acids in your stomach (HCl). The product of this reaction is CO2 and CaCl. The CO2 is then "burb"ed up and the CaCl will be harmlessly disolved into the body.
You accidentally swallowed a piece of plastic what do you do?
It depends on the size. If it was a small piece of plastic, (such as the size of a nickel or smaller,) you will be fine. If it is a larger piece, if you feel like you are choking, you should get medical help immediately.
How does food get out of the small intestine and into the blood?
Nutrients are absorbed through the walls of the small intestine into the bloodstream by diffusion or active transport. The structures in the walls of the intestine that allow this to happen are villi, which resemble finger-like projections. They are very well adapted to absorbing nutrients, thanks to a huge surace area, thin cell walls to make diffusion more efficient, and a rich blood supply to keep a strong concentration gradient.
How can you find someone who will accept 100 Reader's Digest Select Edition books?
i will take them off your hands if they are free----im trying to get the entite collection
What is the process of digestion?
Stomach digestion, pancreas juicing, intestine sucking, liver cleaning, poo stinkin!
Why did God create the digestive tract?
So that his creation would have the opportunity to derive nutrition from the food they were eating? Without it, we'd be dead. Real quick.
How does the digestive system of a newt work?
The digestive system is pretty simple. The newt eats its food, it is then sent to the stomach, digested and sent through the intestine, and eventually excreted.
The digestive tract begins at the oral cavity and continues through the pharynx, esophagus, stomach,
small intestine, and large intestine, which opens to the exterior at the anus.
The Oral Cavity
limited digestion of carbohydrates and lipids.
The Tongue
secretion of mucins and the enzyme lingual lipase.
The parotid salivary glands produce a serous secretion containing large amounts of salivary amylase, an enzyme that breaks down starches (complex carbohydrates).
Cells of the submandibular glands secrete a mixture of buffers, glycoproteins called mucins, and salivary amylase.
The primary function of the esophagus is to convey solid food and liquids to the stomach.
The stomach
Disruption of chemical bonds in food material through the action of acids and enzymes,
production of intrinsic factor, a glycoprotein whose presence in the digestive tract is required for the absorption of vitamin B12in the small intestine.
Parietal cells in the stomach secrete hydrochloric acid (HCl).
Chief cells secrete pepsinogen, an inactive proenzyme. Pepsinogen is converted by the acid in the
gastric lumen to pepsin, an active proteolytic enzyme.
Glands in the pylorus produce primarily a mucous secretion, rather than enzymes or acid. In addition, several types of enteroendocrine cells are scattered among the mucus-secreting cells.
Gastrin is produced by G cells, which are most abundant in the gastric pits of the pyloric antrum.
The pyloric glands also contain D cells, which release somatostatin, a hormone that inhibits the release of gastrin.
The stomach is a holding tank in which food is saturated with gastric juices and exposed to stomach acids and the digestive effects of pepsin.
The mucosa of the small intestine produces only a few of the enzymes involved.
The pancreas provides digestive enzymes, as well as buffers that help neutralize chyme.
The liver secretes bile, a solution stored in the gallbladder for subsequent discharge into the small intestine.
Bile contains buffers and bile salts, compounds that facilitate the digestion and absorption of lipids.
Brush border enzymes are integral membrane proteins located on the surfaces of intestinal microvilli.
These enzymes perform the important digestive function of breaking down materials that come in contact with the brush border.
Enterokinase, one brush border enzyme that enters the lumen in this way, does not directly participate in digestion, but it activates a key pancreatic proenzyme, trypsinogen.
Intestinal glands also contain enteroendocrine cells responsible for the production of several intestinal hormones, including gastrin, cholecystokinin, and secretin.
The pancreas is primarily an exocrine organ, producing digestive enzymes and buffers.
The specific pancreatic enzymes involved include the following:
Pancreatic alpha-amylase, a carbohydrase- an enzyme that breaks down certain starches.
Pancreatic alpha-amylase is almost identical to salivary amylase.
Pancreatic lipase, which breaks down certain complex lipids, releasing products (such as fatty acids) that can be easily absorbed. Nucleases, which break down nucleic acids.
Proteolytic enzymes, which break certain proteins apart. The proteolytic enzymes of the pancreas
include proteases, which break apart large protein complexes, and peptidases, which break small peptide chains into individual amino acids.
Duodenal enteroendocrine cells produce the following hormones known to coordinate digestive functions: Secretin is released when chyme arrives in the duodenum. Secretin's primary effect is an increase in the secretion of bile and buffers by the liver and pancreas.
Cholecystokinin (CCK) is secreted when chyme arrives in the duodenum, especially when the chyme contains lipids and partially digested proteins.
Gastric inhibitory peptide (GIP) is secreted when fats and carbohydrates-especially glucose-enter the small intestine.
Vasoactive intestinal peptide (VIP) stimulates the secretion of intestinal glands, dilates regional capillaries, and inhibits acid production in the stomach.
Gastrin is secreted by G cells in the duodenum when they are exposed to large quantities of incompletely digested proteins.
The functions of gastrin include promoting increased stomach motility and stimulating the production of acids and enzymes.
Enterocrinin, a hormone released when chyme enters the small intestine, stimulates mucin production by the submucosal glands of the duodenum.
Phew!
How is a frogs digestive system similar to humans?
Humans have teeth up front that are strong and destroy what is being eaten, and they have villi in their small intestines. Frogs have weak teeth that help to crush their food brought into their mouth by their tongue. Their small intestine does most of the digestion.
the human digestive system has an anus and an appendix in the digestive system while a frog's digestive system has a cloaca and a cloaca vent
How long does it take for bogeys to digest?
The digestion of boogers or bogeys (dried nasal mucus) remains a mystery, as they would probably get digested along with anything else you have eaten.
What is the digestion period for a German shepherd?
Do you mean gestation or are you really looking for how long it takes for a GSD to take a dump?
What are the bad effects of bad eating?
fatigue, Obesity, slower reaction, slower brain funtion, pretty much all the bad things. At the end, it will shorten your life span.
While it was believed that humans could not digest chitin for a long time, chitinase has recently been discovered in human gastric juice. So, humans can digest chitin. Other organisms like plants, fish, and other fungi can also digest chitin, although not all other organisms can.
Digestion of complex carbohydrates begins in?
Digestion of carbs begins in the mouth due to an enzyme called salivary alpha-amylase found in saliva. This is produced by the acinar cells of the salivary glands and secreted in to the mouth with other compounds. The stimulation of saliva secretion is primary by the parasymapethetic nerve fibers, although the sympathetic nervous stimulation causes transient increase in saliva secretion. Salivary amylase is inactivated in the stomach due to the high acidity. Digestion of carbs resumes in primary in the duodenum and the upper jejunum of the small intestine.
What is the bulge of the greater curvature of the stomach superior to the esophageal junction?
The fundus is the bulge of the greater curvature of the stomach superior to the esophageal junction.
