How was the digestive system of man known to world?
540434
great old physicians and surgeons made it\nlike avi cenna.
80856
He was the first to come up with a good system of classifying all life on earth. His system, with variations, is still in wide use today. \n\nVery Important Person to scientists!
889051
Neither is more important.  Without both systems, the body would not be able to function, so both are equally important.  And the word you are looking for is exocrine, although the exocrine pancreas is the part of the pancreas that deals with digestion.  The real question is between the exocrine pancreas and the endocrine pancreas.  If you had to pick one, I would say exocrine is more important, but they are both absolutely vital.
224530
Digestive System Organs\n\nEsophagus- A simple conduit between the mouth & stomach.\nStomach- Where the enzymatic digestion of proteins initiated and foods are reducted to liquid form.\nLiver- It's major role is to provide bile salts to the small intestine, which are critical for digestion & absorption of fats.\nPancreas- Important roles as both and endocrine & exocrine organ- provides a potent mixture of digestive ezymes to the small intestine which are critical for digestion of fats, carbs and protein.\nSmall Intestine- Where the final stages of chemical enzymatic digestion occur & where almost all nutrients are absorbed.\nLarge Intestine- Major differences among species in extent & importance - in all animals water is absorbed, bacterial fermentation takes place and feces are formed. In carnivores, that's about the extent of it, but in herbivores; like the horse, the large intestine is huge and of critical importance for utilization of cellulose.\n\nEXCRETORY ORGANS\n\nLUNGS- Diffuses carbon dioxide from the blood, into the lung tissue, and then leaves the body everytime we exhale.\nLIVER- The largest internal organ in our bodies. Its numerous functions make it part of the circulatory, digestive, and excretory systems. Some proteins & other nitrogenous compounds are broken down in the liver by a process called deamination. The liver produces bile, which is temporarily stored in the gall bladder before being released into the small intestine where it helps break down lipid molecules. The liver removes & breaks down old red blood cells. It is also responsible for maintaining normal levels of glucose in the blood. The liver is ALSO responsible for removing potentially hazardous chemicals from the blood. It "detoxifies" the blood.\nSKIN- Sweat comes out of pores in your skin. Sweat is a mixture of 3 metabolic wastes: water, salts, & urea. So as you sweat, your body accomplishes 2 things: sweating has a cooling effect on the body, and metabolic wastes are excreted.\nKIDNEYS- they filter the blood. The kidneys help filter the blood.\n\nRESPIRATORY \n\nNose & Nasal Cavity- airway, moistens & warms air, filters air, resonating chamber for speech, houses smell receptors.\n\nPharynx (throat)- connects nasal cavity to oral cavity & larynx & esophagus. Is a common path for air and food.\n\nLarynx (voice box)- Provides an open airway. Routes food to the esophagus & air to trachea.\n\nTrachea (windpipe)- Descends from larynx & divides into the 2 primary bronchi. Is mobile; stretches, recoils, moves side to side. \n\nLungs- are the collective arrangement of the respiratory zone.
443240
The digestive system begins with the mouth and extends through the esophagus, stomach, small intestine, and large intestine, ending with the rectum and anus. Other organs in this system include the liver, pancreas, gallbladder, and appendix.\nThe large and small intestines are between 25 and 28 feet long.
77658
Chemical digestion is accomplished using enzymes - chemicals that break down the structure of whatever food the amoeba is eating.  Mechanical digestion comes from movement - like chewing - using physical force to break apart the food, but not alter the food's chemical structure (that is what the enzymes do - alter the chemical structure)
166498
Esophagus is one of the digestive organs. If it comes for esophagus, every food just passes through it, there's no reaction occur. If there's no reaction, that means there's no specific organ occur either. Actually, location of cilia is not far from esophagus. Cilia can be found at the upper part of nasal cavity (channel which connected between nose & trachea), used as smelling receptor.
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This is shooting from the hip, I would double check this.....\n\nmouth\nesophagus\nstomach\nSmall Intestine\nLarge Intestine\n\nduring this path you will have help from saliva, the liver, pancreas to help break down and process foods, and remove toxins, etc.
1009638
As sticky as chewing gum might appear to be outside the body, once it's sent down the alimentary canal it's no more remarkable in that respect than most anything else we swallow.\n\nGum is eliminated as human waste in the same way — and at the same rate — as any other swallowed matter. Granted, it comes out the far end relatively unchanged by the trip, but it does come out on schedule.
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the digestive system/alimentary canal is 8-9 meters long and a typical meal takes 26-30 hours to pass through it in an adult human
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The digestive tract is complete and ciliated, with a mouth, anus and complex stomach. The pattern of the stomach varies according to the mollusks diet.  Food is taken up by cells lining the digestive glands arising from the stomach, and then is passed into the blood.  Undigested materials are compressed and packaged, then discharged through the anus into the mantle cavity and are carried away from the animals in the water currents.  This packaging of wastes in solid form prevents fouling of the water passing over the gills. \n        Excretory functions are carried out by a pair of nephridia, tubular structures that collect fluids from the coelom and exchange salts and other substances with body tissues as the fluid passes along the tubules for excretion. The nephridia empty into the mantle cavity.
423471
If I am understanding this question correctly, we humans have one (Esophagus).  But it splits into two (Mouth and Nose).  Now Digestive gases... You know... Flatulence.
364370
Yes, It contains natural bacterias and other enzymes that aid the digestion system.
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Amylase.  It's found in the mouth, as well as stomach and small intestine.
170937
A lot, actually. The kidney and the small and large intestines are the most well-known ones. But your skin actually does it's share of excreting waste from your body too. And so do your lungs. Carbon dioxide is a waste product after all.
237038
The earthworm has a body cavity through which the intestine passes with a front part that is modified to form special structures. The muscular throat sucks food into the food storage organ and it has a gizzard (a muscular organ in which food is ground into smaller pieces) that will grind food. They have an intestine (a region where chemical digestion and absorption occur). The intestine is tube-shaped and runs the entire length of the worm. It has a very tiny brain that is connected to a nerve cord that lies under the intestine. This comprises the nervous system of the earthworm.
239463
I heard of a white man in India who chewed Ice Cubes as they helped his indigestion, he died of an ulcer of the stomach!