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Die Leiche (englischer Originaltitel: The Body) bezeichnet eine im Jahre 1982 in der Novellensammlung Frühling, Sommer, Herbst und Tod veröffentlichte Novelle des US-amerikanischen Schriftstellers Stephen King. Die Erzählung wurde im Jahr 1986 von Rob Reiner als Stand By Me verfilmt.
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- Overview
- Chemical composition of the body
- Organization of the body
Chemically, the human body consists mainly of water and organic compounds—i.e., lipids, proteins, carbohydrates, and nucleic acids. The human body is about 60 percent water by weight.
What are the four main types of tissue in the human body?
The four main types of tissue in the human body are epithelial, muscle, nerve, and connective.
What are the nine major organ systems in the human body?
The nine major organ systems in the human body are the integumentary system, the musculoskeletal system, the respiratory system, the circulatory system, the digestive system, the excretory system, the nervous system, the endocrine system, and the reproductive system.
human body, the physical substance of the human organism, composed of living cells and extracellular materials and organized into tissues, organs, and systems.
Chemically, the human body consists mainly of water and of organic compounds—i.e., lipids, proteins, carbohydrates, and nucleic acids. Water is found in the extracellular fluids of the body (the blood plasma, the lymph, and the interstitial fluid) and within the cells themselves. It serves as a solvent without which the chemistry of life could not take place. The human body is about 60 percent water by weight.
Lipids—chiefly fats, phospholipids, and steroids—are major structural components of the human body. Fats provide an energy reserve for the body, and fat pads also serve as insulation and shock absorbers. Phospholipids and the steroid compound cholesterol are major components of the membrane that surrounds each cell.
Proteins also serve as a major structural component of the body. Like lipids, proteins are an important constituent of the cell membrane. In addition, such extracellular materials as hair and nails are composed of protein. So also is collagen, the fibrous, elastic material that makes up much of the body’s skin, bones, tendons, and ligaments. Proteins also perform numerous functional roles in the body. Particularly important are cellular proteins called enzymes, which catalyze the chemical reactions necessary for life.
Carbohydrates are present in the human body largely as fuels, either as simple sugars circulating through the bloodstream or as glycogen, a storage compound found in the liver and the muscles. Small amounts of carbohydrates also occur in cell membranes, but, in contrast to plants and many invertebrate animals, humans have little structural carbohydrate in their bodies.
Nucleic acids make up the genetic materials of the body. Deoxyribonucleic acid (DNA) carries the body’s hereditary master code, the instructions according to which each cell operates. It is DNA, passed from parents to offspring, that dictates the inherited characteristics of each individual human. Ribonucleic acid (RNA), of which there are several types, helps carry out the instructions encoded in the DNA.
Along with water and organic compounds, the body’s constituents include various inorganic minerals. Chief among these are calcium, phosphorus, sodium, magnesium, and iron. Calcium and phosphorus, combined as calcium-phosphate crystals, form a large part of the body’s bones. Calcium is also present as ions in the blood and interstitial fluid, as is sodium. Ions of phosphorus, potassium, and magnesium, on the other hand, are abundant within the intercellular fluid. All of these ions play vital roles in the body’s metabolic processes. Iron is present mainly as part of hemoglobin, the oxygen-carrying pigment of the red blood cells. Other mineral constituents of the body, found in minute but necessary concentrations, include cobalt, copper, iodine, manganese, and zinc.
The cell is the basic living unit of the human body—indeed, of all organisms. The human body consists of trillions of cells, each capable of growth, metabolism, response to stimuli, and, with some exceptions, reproduction. Although there are some 200 different types of cells in the body, these can be grouped into four basic classes. These four basic cell types, together with their extracellular materials, form the fundamental tissues of the human body:
1.epithelial tissues, which cover the body’s surface and line the internal organs, body cavities, and passageways
2.muscle tissues, which are capable of contraction and form the body’s musculature
3.nerve tissues, which conduct electrical impulses and make up the nervous system
4.connective tissues, which are composed of widely spaced cells and large amounts of intercellular matrix and which bind together various body structures
Bone and blood are considered specialized connective tissues, in which the intercellular matrix is, respectively, hard and liquid.
- The Editors of Encyclopaedia Britannica
Die Visible-Body-Lernplattform ist unsere völlig kostenlose Einführung in jedes menschliche Körpersystem. Unser Ziel ist es, dass jede Person überall auf einfache Weise auf unsere erstklassigen visuellen Inhalte der menschlichen Biologie zugreifen kann.
1. Apr. 2024 · Wir möchten ein tiefes Verständnis dafür schaffen, welche Möglichkeiten und Risiken die Cannabis Pflanze für Unternehmen und Verbraucher bietet. THE BODY bietet eine Vielzahl von Produkten, Informationen, Workshops, Vorträgen und Diskussionen von führenden Experten & Unternehmen aus der Cannabis-Industrie. Themen reichen von ...
Jordan Licht: Dorene. Limor Goldstein: Galic. The Body (Alternativtitel: Das geheimnisvolle Grab) ist ein US-amerikanisch - israelischer Thriller aus dem Jahr 2001. Regie führte Jonas McCord, der auch das Drehbuch anhand eines Romans von Richard Sapir schrieb.
The Body steht für: The Body, Originaltitel von Die Leiche, Novelle von Stephen King (1982) The Body (Sapir), Roman von Richard Sapir (1983) The Body (Band), US-amerikanische Band. Filme: The Body (1970), britischer Film von Roy Battersby. The Body (1974), italienischer Film von Luigi Scattini.
