The stages of digestion in a human being are the cephalic phase, the gastric phase and the intestinal phase. During these phases, nutrients are broken down to provide fuel for the body.
The amount of time that digestion takes varies from person to person, but on average it takes around 33 to 50 hours. It takes 6 to 8 hours for food to pass through the stomach.
According to Branch Basics, digestion begins in the mouth when the process of chewing starts. Salivary glands will secrete a mucus, which assists in lubricating the food before swallowing.
The human digestive system begins in the mouth and ends at the anus. Enzymes in saliva break food down into smaller particles in the mouth. Food is then swallowed and goes through the digestive tract before leaving the bottom through the rectum and anus.
The digestive system helps the body break down food, so nutrients can be used for cell repair, growth and energy. The digestive system is also responsible for storing and excreting solid wastes.
The three main functions of the human digestive system are to break food down into chyme for the body's use, to secrete and absorb nutrients and bodily fluids into the gastrointestinal tract or the blood, and to store and eliminate waste. The digestive system has major parts and accessory parts.
Digestion is the process that breaks food down into the molecules that the body needs for all of its metabolic processes. Food is the body's fuel source and the source that the body's molecules and cells use to build and repair the body, but the body cannot use the food unless it has been digested.
Easy-to-digest foods include refined breads and pastas; well-cooked or canned vegetables without seeds; ripe bananas or canned fruits without seeds and skins; and animal products such as meat and eggs, states WebMD. Dairy is also easily digestible but can cause diarrhea and cramping in some people.
Diseases that commonly attack the digestive system include irritable bowel syndrome, lactose intolerance, cancer, pancreatitis and gastroesophageal reflux disease, according to MedlinePlus. Liver disorders, including hepatitis B and C and liver failure; esophageal disorders, including achalasia and
The two phases of digestion are mechanical digestion and chemical digestion, according to Midlands Technical College. Both phases occur in the mouth, stomach and small intestine, but chemical digestion also occurs in the large intestine.