Prezentace aplikace PowerPoint
... absorb food. Physical digestion breaks the food down into smaller pieces and chemical digestion breaks these pieces into smaller molecules. Various enzymes and other substances, such as hydrochloric acid and bile, are involved in this process. ...
... absorb food. Physical digestion breaks the food down into smaller pieces and chemical digestion breaks these pieces into smaller molecules. Various enzymes and other substances, such as hydrochloric acid and bile, are involved in this process. ...
Cellular metabolism
... gall bladder. This is commonly known as bile. Bile works to dissolve fat so that it can be digested by the other enzymes. Rhythmic smooth muscle contraction continues within the small intestine and pushes the digesting food through its narrow tube. Once the food is completely broken down into its in ...
... gall bladder. This is commonly known as bile. Bile works to dissolve fat so that it can be digested by the other enzymes. Rhythmic smooth muscle contraction continues within the small intestine and pushes the digesting food through its narrow tube. Once the food is completely broken down into its in ...
Digestive System
... All the physical and chemical processes in an organism that create energy and maintain growth, from digestion to cell respiration Enzyme: A catalyst molecule for chemical reactions Mitochondria: The cell organelle where respiration takes place and energy is created Villi: Small projections on the in ...
... All the physical and chemical processes in an organism that create energy and maintain growth, from digestion to cell respiration Enzyme: A catalyst molecule for chemical reactions Mitochondria: The cell organelle where respiration takes place and energy is created Villi: Small projections on the in ...
Introduction to the Digestive System Notes
... • Pancreas: provides a potent mixture of digestive enzymes to the small intestine which are critical for digestion of fats, carbohydrates and protein. • Gallbladder: stores and concentrates bile, and then releases it into the duodenum to help absorb and digest fats. ...
... • Pancreas: provides a potent mixture of digestive enzymes to the small intestine which are critical for digestion of fats, carbohydrates and protein. • Gallbladder: stores and concentrates bile, and then releases it into the duodenum to help absorb and digest fats. ...
Session 1 Worksheet - Iowa State University
... Odd Man Out: Choose the word in each group that does not belong. If not already given, indicate what the words have in common. Alimentary Canal Mouth Esophagus Stomach Liver ...
... Odd Man Out: Choose the word in each group that does not belong. If not already given, indicate what the words have in common. Alimentary Canal Mouth Esophagus Stomach Liver ...
Food and Digestion
... The whole point of digestion is to break down our food so that we can get the bits we need from it… ...
... The whole point of digestion is to break down our food so that we can get the bits we need from it… ...
Topic: B2b Lesson: 2 Title: Enzymes and digestion
... alkaline pH to work best, so bile passes into the small intestine and neutralises acid from the stomach. • Bile also emulsifies fat droplets to increase their surface area ...
... alkaline pH to work best, so bile passes into the small intestine and neutralises acid from the stomach. • Bile also emulsifies fat droplets to increase their surface area ...
Name
... 1. Label and color each organ of digestion on the diagram on the back of this sheet. Use page 638 of your textbook to help you identify each organ. a. include each digestive organ b. include whether the organ is responsible for mechanical or chemical digestion or both. c. describe in your own words ...
... 1. Label and color each organ of digestion on the diagram on the back of this sheet. Use page 638 of your textbook to help you identify each organ. a. include each digestive organ b. include whether the organ is responsible for mechanical or chemical digestion or both. c. describe in your own words ...
oral cavity
... as the oral cavity Teeth chop food into small pieces, which are moistened by saliva before the tongue and other muscles push the food into esophagus. ...
... as the oral cavity Teeth chop food into small pieces, which are moistened by saliva before the tongue and other muscles push the food into esophagus. ...
File - King`s General Science
... Not All food needs digesting! Simple sugars, water, vitamins & minerals are small molecules and can be absorbed as they are – they do not need to be digested! ...
... Not All food needs digesting! Simple sugars, water, vitamins & minerals are small molecules and can be absorbed as they are – they do not need to be digested! ...
Nutrition and Digestion 10/29
... 11. What are the 5 functions of gut microbiota? a) b) c) d) e) Things to study on own: Anatomy of body-where each organ is located ...
... 11. What are the 5 functions of gut microbiota? a) b) c) d) e) Things to study on own: Anatomy of body-where each organ is located ...
Tissue- Collection of cells working together to perform a function
... and teeth. Chemical digestion with saliva which contains amylase, an enzyme that breaks down starch into simple sugars. ...
... and teeth. Chemical digestion with saliva which contains amylase, an enzyme that breaks down starch into simple sugars. ...
Digestion
Digestion is the breakdown of large insoluble food molecules into small water-soluble food molecules so that they can be absorbed into the watery blood plasma. In certain organisms, these smaller substances are absorbed through the small intestine into the blood stream. Digestion is a form of catabolism that is often divided into two processes based on how food is broken down: mechanical and chemical digestion. The term mechanical digestion refers to the physical breakdown of large pieces of food into smaller pieces which can subsequently be accessed by digestive enzymes. In chemical digestion, enzymes break down food into the small molecules the body can use.In the human digestive system, food enters the mouth and mechanical digestion of the food starts by the action of mastication (chewing), a form of mechanical digestion, and the wetting contact of saliva. Saliva, a liquid secreted by the salivary glands, contains salivary amylase, an enzyme which starts the digestion of starch in the food; the saliva also contains mucus, which lubricates the food, and hydrogen carbonate, which provides the ideal conditions of pH (alkaline) for amylase to work. After undergoing mastication and starch digestion, the food will be in the form of a small, round slurry mass called a bolus. It will then travel down the esophagus and into the stomach by the action of peristalsis. Gastric juice in the stomach starts protein digestion. Gastric juice mainly contains hydrochloric acid and pepsin. As these two chemicals may damage the stomach wall, mucus is secreted by the stomach, providing a slimy layer that acts as a shield against the damaging effects of the chemicals. At the same time protein digestion is occurring, mechanical mixing occurs by peristalsis, which is waves of muscular contractions that move along the stomach wall. This allows the mass of food to further mix with the digestive enzymes.After some time (typically 1–2 hours in humans, 4–6 hours in dogs, 3–4 hours in house cats), the resulting thick liquid is called chyme. When the pyloric sphincter valve opens, chyme enters the duodenum where it mixes with digestive enzymes from the pancreas and bile juice from the liver and then passes through the small intestine, in which digestion continues. When the chyme is fully digested, it is absorbed into the blood. 95% of absorption of nutrients occurs in the small intestine. Water and minerals are reabsorbed back into the blood in the colon (large intestine) where the pH is slightly acidic about 5.6 ~ 6.9. Some vitamins, such as biotin and vitamin K (K2MK7) produced by bacteria in the colon are also absorbed into the blood in the colon. Waste material is eliminated from the rectum during defecation.