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Biology digestive system
Biology digestive system
Biology digestive system
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Digestion is the process in which food is broken down into smaller molecules, that can thereafter be more simply absorbed by the body, producing energy to build and nurture cells. Cells require a continuous amount of energy and nutrients to assist the body in functioning. There are two types of digestion mechanical and chemical. Mechanical digestion is the process of breaking down large food molecules into smaller parts by physical means, taking place in the mouth and stomach. This process typically being attained by chewing or by the muscles in the digestive tract. Chemical digestion, on the other hand, is the chemical breakdown of food from smaller parts into molecules. Chemical substances such as acid, bile, and digestive enzymes assist in chemical digestion; taking place characteristically in the stomach. Digestion consists of many structures and organs, that work together in order to complete the digestive cycle and absorb the necessary nutrients from food products and excrete waste. Thus,
The alimentary canal, as well as the accessory organs, make up the digestive system. The accessory organs of the digestive system are organs that are concerned in digestion however food molecules do not go through them. The digestive system accessory organs include the salivary glands, liver, gallbladder, and pancreas. Ultimately, the digestive tract is essentially a long tube which is continuous with the body’s exterior. It is lined with specialized epithelium which can excrete enzymes and absorb nutrients. Path way of food during the digestive system starts at the mouth, pharynx, esophagus, stomach, small intestine, rectum, and anus leading out of the body. The human body depends on food for maintained, repair, and energy. Failure to ingest a balanced diet may result in organ damage, disease, and possibly death. Thus being a vital part of human
During digestion, the body breaks down food into smaller molecules that could then be used by the body’s cells and tissues in order to perform functions. This starts off in the mouth with the physical movements of chewing and the chemical breakdown by saliva. Enzymes in the stomach break food down further after traveling from the mouth through the esophagus. The food from here then moves into the small intestine, where pancreatic juices and enzymes dissolve proteins, carbohydrates, and fibers, and bile from the liver breaks down fats into these small molecules. Any portion of the fibers or food that were unable to be broken down are passed from the small intestine to the large intestine, which is where the digestive tract transitions into the excretory tract, then the colon and out of the rectum. Any liquids that have been stripped of their nutrients by the body proceed from the stomach to the kidneys. In the kidneys, sodium ions (Na+), uric acid, and urea are exchanged with water, which moves urinary bladder and is excreted through the
•The forty five year old patient is diagnosed with the progressive cirrhosis inflaming the liver along with the parenchymal cells. The plain symptoms is manifested primarily because of the augmentation of edema internally in the lower abdomen.
As the digestive system breaks down your food, after it's broken down it turns into energy. Your circulatory system takes some the produced energy and transports it around the body, delivering it and other blood, nutrients, oxygen, and more compounds to every cell in your body. The digestive depends on the circulatory as much as it does vice versa because they need the blood, nutrients, and energy (broken down food) that was produced from both systems. Many digestive organs need to use about 30% of cardiac output. Both the digestive and circulatory systems get rid of unwanted or unneeded materials (waste) and feces (poop). The vial substances are absorbed by the small intestine, where it is put into the bloodstream, so it can be circulated around the body. The most important thing is that with no nutrients and circulation, there's no life.
Digestion have a function of breaking down all food into our body. Our body use all nutrients to help in the process been health and growth. Digestion supplied small molecules that will be absorbed into our bloodstream.
The digestive system, in organisms like the mink and human, is supposed to break down the food being eaten to transfer into energy. This energy helps other functions of the body that would in turn keep it alive. The digestive system includes organs such as the stomach, intestines, liver, etc. Digestion starts at the mouth, though.
The digestive system otherwise known as the gastrointestinal tract (GI tract) is a long tube which runs from the mouth to the anus. It operates to break down the food we eat from large macromolecules such as starch, proteins and fats, which can’t be easily absorbed, into readily absorbable molecules such as glucose, fatty acids and amino acids. Once broken down, these molecules can cross the cells lining the small intestine, enter into the circulatory system and be transported around the body finally being used for energy, growth and repair.
The digestive system has of a chain of linked organs that work with each other to digest, and break down food into molecules that are put in the circulatory system. Then takes them to the body’s tissues. The most important structures in the digestive system are the tongue, mouth, intestines, esophagus, stomach, and anus. The liver, gallbladder, and pancreas are with the digestive system also.
The digestive system is a group of organs that works together to convert food into energy and basic nutrients that will feed the entire body. The digestive system breaks down food so nutrients can be absorbed by the body. The digestive system has three main functions. First, it ingests food then breaks it down so nutrients can be absorbed and it also eliminates what cannot be digested.
Fig1. shows the human digestive system or the alimentary canal with different organs. (ladyofHats 2006).
Pancreas- The pancreas creates a juice that breaks down carbohydrates, fats, and proteins. "The pancreas delivers digestive juice to the small intestine through small tubes called ducts" (NIH (5).) The pancreas is not considered part of the GI tract, but it is a necessary organ needed for the digestion and absorption of nutrients.
http://kidshealth.org/kid/cancer_center/HTBW/digestive_system.html ( I didnt copy direct quotes, however I had used the idea of the beginning in my research on the digestive system to help the reader better understand the system)
Imagine you are eating a sandwich containing wheat bread, ham, lettuce, and Swiss cheese. Do you ever wonder where the nutrients go from all of the previous listed ingredients? Well, when a bite of this sandwich is taken, the mouth produces a saliva enzyme called amylase. This enzyme immediately goes to work by breaking down the carbohydrates that are in the bread. Once, the bite is completely chewed, the contents then are swallowed and go down the esophagus and begin to head towards the upper esophageal sphincter and the is involuntarily pushed towards the stomach. The next passage for the sandwich is to go through the lower esophageal sphincter; which transports the sandwich into the stomach.
The digestive system is a very important system in the human body. It is a group of organs that work together to turn food into energy and nutrients in the entire body. The food that was chewed in a humans’ mouth now passes through a long tube that is inside of the body that is known as the alimentary canal. The alimentary canal is made of the oral cavity, pharynx, esophagus, stomach, small intestines, and large intestines. Those few things are not the only important accessories of the digestive system there is also the teeth, tongue, salivary glands, liver, gallbladder, and pancreas.
The excretory system, which includes the rectum and anus helps the digestive system by getting rid of waste and the digestive system helps the excretory system by breaking down food to be eliminated from the body. Wow! The human body wouldn’t be able to work without one or the other. Anyways, I hope you enjoyed reading my journey throughout the human digestive system. I hope to write again from where my next journey from here will begin- perhaps it will be in the ocean or along Sydney Water pipes. Until next
When humans consume plants, the carbohydrates, lipids, and proteins are broken down through two forms of cellular respiration. The two processes of cellular respiration displayed in humans are anaerobic and aerobic. The deciding process used depends on the presence of oxygen. Cellular respiration converts the material into a useable energy called ATP. ATP is the energy form that cells can use to perform their various functions, and it can also be stored for later use.