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Nutrition

Digestive system

TermDefinition
alimentary canal the whole passage along which food passes through the body from the anus.
anus the opening at the end of the alimentary canal through which solid waste matter leaves the body.
appendicitis a serious medical condition in which the appendix becomes inflamed and painful.
appendix a tube-shaped sac attached to and opening into the lower end of the large intestine in humans and some other mammals.
bile a bitter greenish-brown alkaline fluid that aids digestion and is secreted by the liver and stored in the gallbladder.
chemical digestion the process in the alimentary canal by which food is broken.
chyme the pulpy acidic fluid that passes from the stomach to the small intestine, consisting of gastric juices and partly digested food.
colon The intestines are a long, continuous tube running from the stomach to the anus.
constipation is a condition of the digestive system where an individual has hard feces that are difficult to expel.
diarrhea is a symptom defined as passing frequent loose, watery stools.
esophagus The tube that connects the pharynx (throat) with the stomach.
feces are the solid or semisolid remains of the food that could not be digested in the small intestine.
gallbladder A small, muscular sac located under the liver. Bile is stored in the gallbladder until it is needed by the small intestine for digestion.
gastric juice The colorless, watery, acidic digestive fluid that is secreted by various glands in the mucous membrane of the stomach
hydrochloric acid It is a highly corrosive, strong mineral acid commonly used as a laboratory reagent.
large intestine the last part of the gastrointestinal tract and of the digestive system in vertebrates.
lipases an enzyme that breaks down dietary fats into smaller molecules called fatty acids and glycerol.
liver a large very vascular glandular organ of vertebrates that secretes bile and causes important changes in many of the substances contained in the blood
mechanical digestion When it comes to digestion, chewing is only half the battle.
mucus viscous fluid that moistens, lubricates, and protects many of the passages of the digestive and respiratory tracts.
oral cavity orifice through which food and air enter the body.
pancreas A long, irregularly shaped gland in vertebrate animals that is located behind the stomach.
pepsin is an endopeptidase that breaks down proteins into smaller peptides .
peristalsis The wavelike muscular contractions in tubular structures, especially organs
ptyalin a form of amylase found in the saliva of humans and some other animals.
rectum s a chamber that begins at the end of the large intestine.
rennin is a proteolytic enzyme related to pepsin.
saliva a viscid, watery fluid, secreted into the mouth by the salivary glands.
salivary glands produce saliva, which keeps the mouth and other parts of the digestive system moist.
small intestine the narrow part of the intestine that lies between the stomach and colon.
stomach An organ in the digestive system, on the left side of the body behind the lower rib cage, that receives chewed food from the esophagus.
ulcer is a sore on the lining of your stomach, small intestine or esophagus.
villi project inwards from the lining of the small intestine.
Created by: Mario50
 

 



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