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Nutrition
Digestive system
Term | Definition |
---|---|
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. |