The digestive system is a group of organs that perform the process by which food, containing nutrients, is eaten and broken down into different components. This breakdown makes it possible for the digested material to pass through the intestinal wall into the blood stream. The digestive process contains many different steps that take place in many different organs.
The first step of digestion begins at the mouth, where the food enters the mouth. Saliva is secreted from the salivary glands. The saliva contains enzymes such as Ptyalin, which starts sugar digestion. The enzymes also provide lubrication to help in the chewing and swallowing of the food. The food then goes down the esophagus and into the stomach, where the next step of digestion takes place. .
In the stomach, a mixture of hydrochloric acid and Pepsin, which is secreted by the stomach wall, liquefies the food. At the same time, a substance called intrinsic factor binds Vitamin B in food and various gastric enzymes, such as Pepsin (which begins protein digestion), which are secreted by the stomach wall. Secretions of mucus protect the stomach from its digestive enzymes. The food is then mixed in the stomach, turning it into chyme(digested food). The muscular pumping motion called peristalsis churns the chyme around.
The chyme then passes through the pyloric valve by peristalsis to the first portion of the small intestine, the duodenum. The duodenum is where most of the chemical digestion takes place. Here, bile from the gallbladder and enzymes from the pancreas and intestinal walls combine with the chyme to begin the final part of digestion.
Bile liquid is created in the liver, and stored in the gallbladder. Bile aids in the mechanical digestion of fat. The pancreas and gland cells of the small intestine secrete digestive enzymes that chemically break down complex food molecules into simpler ones. These enzymes include trypsin for protein digestion, amylase for carbohydrate digestion, and lipase for fat digestion.
The first part of the digestive system is the mouth. ... The digestive system also takes all of the unnecessary things and takes them out of your body. ... Without the digestive system your body could not produce the energy it needs to live. ... The digestive system is very important to your body. But with out the other systems in your body the digestive systems would not work. ...
DIGESTIVE SYSTEM The process of breaking down food into molecules the body can use is called digestion. Digestion occurs in the alimentary canal, or digestive tract. ... The first digestive organ that food passes through in your body is the mouth. ... The mouth starts to water-that is, the salivary glands increase their production of saliva, a mixture of water, mucus, and a digestive enzyme called salivary glands. ... It secretes bile, which is not a digestive enzyme but an emulsifying agent that breaks fat globules into small droplets. ...
The digestive system is composed of several different organs; each helping the human body successfully ingest and digest key nutrients. ... There are a number of complications that can occur in the digestive system and here are some of the medical terms that describe them. ... If someone is diagnosed with hepatoma, they most likely have a damaged liver that can no longer function in the digestive system to protect the body from harmful substances. ... The final term for this section is ulcerative colitis.This is an inflammatory bowel disease causing inflammation of the colon and problems with ...
Digestive System The digestive system is the the group of organs that changes food to carbohydrates, fats, and proteins and used by our body. ... the function of our digestion system are to ingest food, digest into nutrients, cross our plasma mambranes, absorb nutrients and eliminate indigestible remains. ... There are different parts of main organs of our digestive system, esophagus, stomach, large intestines, small intestine, liver, pancrea and finally our anus. ... the small intestine is a longest part of our digestive tract of human. ...
The only way is through its digestive system. ... The digestive tract is designed to break this food down into useful chemical energy. ... The special thing about the pharynx is that it is a pathway for both the digestive and reparatory systems. ... These arteries are connected though a system of mesentery tissue. ... The body needs the digestive system not to only absorb nutrients but to also keep safe in the process. ...
Your digestive system is made up of large hollow organs. ... Most of your digestive system takes place in your small intestine. ... Your digestive system and your respiratory system are responsible for giving you nutrition. Your digestive system helps break down your food and give you nutrients. ... Your digestive system supplies water and fundamentals. ...
The Excretory System The excretory system is a system that connects to the digestive system. ... The excretory system is like the sewage system because the excretory system gets rid of waste that the body does not need. ... Its numerous functions make it "part" of the circulatory, digestive, and excretory systems. ... Digestive Function The liver produces bile, which is temporarily stored in the gall bladder before being released into the small intestine where it helps "emulsify" (break down) lipid molecules. ... THE URINARY SYSTEM The Urinary System The process of making go to the bat...
All the bones in your body are a part of one main organ system, the skeletal system. ... Also another system that is similar to the immune system is the lymphatic system which returns the fluid to the bloodstream. ... The endocrine system releases hormones that help regulate the activities of your other organ systems. ... The job of your digestive system is to break down the food you eat, digest. Your stomach and your intestine are organs that are a part of the digestive system. ...
Oral Cavity: The main function of the oral cavity is move food to the digestive tract and to breathe. ... Abdominal Cavity: The abdominal cavity is consits of the digestive system and parts of the circulatory system. The digestive system is the system that's main functions is the nourishment to the body. ... Theses two parts of the digestive system could also be places in the pelvic cavity. ... The Pelvic Cavity: The pelvic cavity holds in it the reproductive system and the excretory system. ...