Place where nutrients enter the blood,how to calm down stress,beginner vegetarian guide,self confidence test - Step 3

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WHY ORGANISMS EXCHANGE GASESOrganisms need to exchange gasses with its environment to take in oxygen and expel waste. HOW HUMANS BREATHE:We use our Lungs, Diaphragm, Nasal Cavity, Larynx,Trachea, Bronchi, and Alveoli.
Peristalsis The two layers of muscles cause rhytmic, wave-like contractions of the gut walls. 6.2 Mammalian Digestive System Oesophagus (Gullet) > Peristalsis The two layers of muscles cause rhytmic, wave-like contractions of the gut walls. 6.2 Mammalian Digestive System Stomach Distensible muscular bag with thick and well developed muscular walls Peristalsis of stomach wall churns (mechanical digestion) food for up to 4 hours to mix with gastric juices Mucous coat of stomach wall has numerous pits that secrete gastric juices. A process where large insoluble molecules are broken down to smaller, soluble and diffusible molecules. Mechanical breakdown of food in: Mouth by the action of teeth (chewing) Stomach by churning of food Increase surface area to volume ratio for enzyme to acts on. Oseophagus No digestion occurs here Peristalsis and gravity help to push food down to stomach.
Hydrochloric Acid Stops action of salivary amylase by denaturing it Changes inactive forms of enzyme pepsinogen and prorennin in gastric juice to active forms pepsin and rennin respectively.


Stomach > Hydrochloric Acid Stops action of salivary amylase by denaturing it Changes inactive forms of enzyme pepsinogen and prorennin in gastric juice to active forms pepsin and rennin respectively.
Pancreatic Juice Pancreatic amylase which digests starch to maltose Trypsin which digests proteins to polypeptides. In normal metabolism, proteins provide little of the energy used by the system, but rather the raw materials for protein synthesis that takes place in cell and muscle function and in tissue repair. Macro-nutrients, in the presence of adequate oxygen (to assist in energy production), micro-nutrients, and water, enter the metabolic pathways under the direction of hormonal signals. A variety of micro-nutrients are required in a healthy diet, as they act as cofactors integral to the enzymes involved in cell functions like DNA and protein synthesis, cell proliferation, immunity, and anti-oxidation processes. Other micro-nutrients include vitamins A, C, and E, with the B-complex vitamins: thiamine, riboflavin, niacin, B6, and folate. These parts of the respiratory system all factor in to follow a formula our body does when we take in O2 and releases CO2.
6.1 Holozoic Nutrition Nutrition is the intake of food and processes of converting food substances into living matter.
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Macro-nutrients supply the energy, measured in calories, in this description: 55% to 60% from carbohydrates, 25% to 30% from fats, and 5% to 10% from proteins.
Calories from carbohydrates that are above and beyond metabolic needs are stored as fats that can be called upon when the energy requirements of the body mandate. Hormones are, in essence, messengers that regulate both anabolic processes, those involved in growth and repair, as well as catabolic processes that break down components and tissues in the course of normal metabolic processes. Zinc, for instance, is a cofactor for RNA and DNA polymerase, and involved in DNA synthesis. Exercise is an integral component of a healthy metabolism to prevent the storage of excess fats, as well as provide healthy stressors that beneficially challenge many parts of the overall system. A proper balance of macro-nutrients is necessary in a healthful diet, to provide the energy and raw materials the body requires to function optimally.



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