In the cells of the human body, about 72% of water (about 2/3 of body weight), 28% is part of the blood, lymph, intercellular fluid. Water performs transport,

Protein metabolism Protein metabolism – the use and conversion of amino acids to proteins in the human body. As a result of the oxidation of 1 g of

Metabolism and energy are continuously exchanged between the body and its environment. Metabolism Metabolism is a complex chain of transformations of substances in the body, starting from the

Nutrition is an integral part of metabolism, a necessary condition for normal growth, development and vital activity of the body. Nutrition is the process of entering the body

Infectious diseases of the digestive system One of the most dangerous diseases transmitted through the digestive system is botulism. The disease is caused by a botulinum bacterium. The

Proper nutrition A person’s health is largely determined by his diet. Food should be varied, it should contain proteins, fats, carbohydrates, vitamins and mineral salts necessary for a

The main methods of studying the processes of digestion in humans are focused on their painlessness and harmlessness. Ultrasound examinations (ultrasound) are widely used in the diagnosis of

Digestion regulation The digestive organs are inaccessible for direct observation. Therefore, for a long time, digestion has been studied in operated animals. The Russian physiologist  Pavlov developed methods

Digestion in the mouth Chewing food, a person moves it in the mouth with the help of the tongue (with the help of the receptors of which we

The stomach is an enlarged part of the digestive tract. The inner mucous membrane of the stomach forms folds and contains a large number of glands that secrete