Know about the human body.

The human body is the complete structure of a human being and comprises a head, neck, trunk (including the chest and abdomen), arms and hands, legs and feet. Each part of the body is composed of several cell types, the fundamental unit of life.

At maturity, the estimated number of cells in the body is given as average number 37200000000000. This number is indicated to be partial data and to be used as a starting point for further calculations. The given number is reached by totaling the number of cells of all organs of body types and cell. The composition of the human body is made up of a certain number of elements, including carbon, calcium and phosphorus.

The study of the human body involves anatomy and physiology. The human body can show no pathological anatomical abnormalities known as variations must be able to be recognized. Physiology focuses on systems and organs of the human body and its functions. Many systems and mechanisms interact in order to maintain homeostasis.

skeletal structure frames the overall body shape and does not change much throughout life. body shape in general (and the shape of the female body) is influenced by the distribution of muscle and fat tissue and is also affected by several hormones. The average height of an adult human male (in developed countries) is about 1.7-1.8 m (5'7 "to 5'11") and adult female is about 1,6- 1.7 m (5'2 "to 5'7"). Height is largely determined by genes and diet. body type and body composition are influenced by factors such as genetics, diet and exercise.

The human body has several body cavities the largest of which is the abdominopelvic cavity. These cavities house the various organs of the body, including the spinal cord that also accommodates the production and flow of cerebrospinal fluid in the ventricular system of the brain.

There are many other smaller cavities in the body called sinuses, which have different functions. Sinuses in general usage refers to the sinuses that are involved in the condition of sinusitis. The sinuses are four pairs of cavities vital air in the skull bones. These air-filled spaces are paired between the eyes, above the eyes, deep behind the eyes and around the nasal cavity.

The main elements that make up the human body are shown from more abundant, mass, less abundant.
The body contains an average adult between 5 and 5½ liters of blood and about 10 liters of interstitial fluid.

The composition of the human body can be referred to in terms of its water content, content elements, tissue types or kinds of materials. The adult body contains approximately 60 human% water, and thus makes a significant proportion of the body, both in terms of weight and volume. The water content can vary from a peak of 75% in a newborn to 45% lower in an obese person. (These figures are necessarily statistical averages).

The vast majority of cells in the human body is not human at all; rather they are bacteria, archaea and methanogens as Methanobrevibacter smithii. The major proportion of these form the intestinal flora. The entire population of the microbiota include microorganisms from the skin and other body parts completely and this is termed as the human microbiome.

The proportions of the body elements can be referred to in terms of the main elements, minor and trace elements. Type of material may also be referred as including water, proteins, connective tissue, fat, carbohydrate and bone.