The Digestive System The digestive system is a system consisting of the mouth, oesophagus, stomach, gallbladder, small intestine, large intestine, the rectum and the anus. The functions of the digestive system are: • To break down food particles into molecules for digestion • To absorb into the bloodstream the small molecules produced by digestion • To eliminate un digested and unabsorbed foodstuffs and other waste products from the body The full digestive process begins at the mouth. The food enters the mouth and is chewed. This is call mastication and it gives the food a greater surface area which enables enzymes to break the food down making it easier to digest. The process of breaking down the food starts with the saliva in your mouth.
This includes the pancreas, liver and the gall bladder. Digestion is the process of digesting food it is a process in which the food is converted or broken down into a substance that can be absorbed and assimilated by living organisms in this case it is mammals. During this process the digestive system is involved mainly the digestive
In the human body, one of the essential systems is the digestive system, which breaks down the foods what we eat into nutrients such as proteins, carbohydrates, vitamins and fats. The bloodstream would be absorbed by them. Therefore, it provides the body with energy, repair and growth. Also, the three types of processes that food passes through in the human body are digestion, absorption and elimination. The digestive system prepares the body cells for nutrients through six activities: Ingestion, Mechanical digestion, Propulsion, Chemical digestion, Absorption and Defecation.
The digestive systems consists of the mouth, oesophagus, stomach, liver, pancreas, small and large intestines and anus. The oral cavity is extremely vital in the process of chewing breaking down food. In addition, the saliva, which softs the food we chew comprises of enzymes that help with the process of digestion. The food that we consume goes down into the oesophagus which is basically a long tube that contains muscles which allows food down into the stomach. Both oesophagus and stomach use voluntary and involuntary movements.
The process of digestion starts in the mouth, then makes its way to the stomach and large intestine, and concludes in the small intestine. At each step along the way, specific enzymes break down specific types of food. This process is chemically balanced as each site along the digestive tract has a different degree of acidity that allows certain enzymes to function while restraining others. Each specific enzyme can bind to only one specific substrate, or group of allied chemical substances. After leaving the stomach, food pulp enters the upper portion of the small intestine where the pancreas (digestive organ that feeds enzymes into the gut) provides pancreatic enzymes to further break down the
Hormones work in the body to regulate the activity of body cells where it relates to homeostasis as the presence allows the effective function of hormone in the body. The mechanism depends on action and interaction of several systems of the body. Factors that affect the ability body to work efficiently include temperature, acidity or concentration of nutrient. This allows bodies to operate efficiently without any harm being caused in the body. Therefore the presence of homeostasis in the body is highly necessary and
The tonsils, spleen thymus, and liver make up this system. The digestive system and the lymphatic system both produce liquid substances which consist of nutrients and the removal of waste. Since the circulatory system transports blood around the body there needs to be a system which removes waste material which is where the lymphatic system comes in. Absorbed unwanted materials get absorbed by muscles in which the lumph picks these materials and gets it towards the lymph nodes. At this point the material gets
The function is to digest or (break down) food and drink into their smallest parts so they can be used by the cells to provide energy. The digested nutrients are absorbed through the intestinal wall and then delivered throughout the body. The undigested food is then stored in the colon until they are ready to be passed through the anus as faeces. The liver and pancreas produce the digestive juices, this travels through small tubes called ducts in to the intestine. The gall bladder retains the digestive juices until they are
temperature, C02 concentration, etc.) and turn on, or off, various internal systems in order to return the body to the set point. " - Homeostasis (page 33), Level 3 Biology Internal Scipad. As seen in the diagram above, the body has a set point, a normal range of which the human body is considered healthy and capable of functioning. However, this can be imbalanced by the effects of increased or decreased blood glucose levels (BGL).
The body is a system of interacting subsystems composed of groups of cells. The human body is an organism, which based on the levels of organization, means it is made up of organ systems. These organ systems include the: skeletal, muscular, respiratory, circulatory, digestive, nervous, and the excretory systems. Each of these systems has an important function that helps keep the organism alive and each system interacts with several (if not all) of the other systems. For example, the circulatory system has the function of providing the body with blood.