Human body

Despite the fact that the general shape and size of the body and its parts are determined by hereditythe body can undergo some modifications in response to present conditions.

If all the airways running through the lungs are joined end to end, they can go up to the length of 2, kilometers. They are called the major or vital organs of your body.

Posteriorly the neural tube terminates in the adult opposite the first lumbar vertebra. Hair grays and thins. In addition, such extracellular materials as hair and nails are composed of protein. The master organ brain is the control center of the body, acting just like CPU of a computer.

It brings oxygen from the air and excretes carbon dioxide and water back into the air. This shrinkage is not, however, correlated with declines in mental capacity. The intestinesliverand spleen sit in the abdominal cavity Height, weight, shape and other body proportions vary individually and with age and sex.

Together, these systems regulate the internal environment of the body, maintaining blood flow, posture, energy supply, temperature, and acid balance pH. Hence, the heat-adapted person in humid climates is characteristically tall and thin, so that there is maximum surface area for heat radiation.

In joints the cartilage covering the ends of bone becomes thinner and sometimes disappears in spots, so bone meets bone directly and the old joints creak.

In addition to detoxifying poisonous substances, it also manufactures proteins and hormones. Body shape is influenced by the distribution of muscle and fat tissue. The highest level of body organization, then, is that of the organ system.

Fats provide an energy reserve for the body, and fat pads also serve as insulation and shock absorbers. These collect in progressively larger veins until they reach the body's two largest veins, the superior and inferior vena cavawhich drain blood into the right side of the heart.

Typically, an adult human eye may measure up to 7. Basic form and development In general structure, the human body follows a plan that can be described as a cylinder enclosing two tubes and a rod.

Other functions of the liver include blood clotting, control of blood sugar and killing germs. Well, these are the folds, villi and microvilli which significantly contribute to the enlargement of the surface area.

Blood vessels carry blood throughout the body, which moves because of the beating of the heart. There can be as many as 10, taste buds found in your mouth, the majority of which are found on tongue and the remainder on lips, roof of mouth and cheeks.

One of the most vital organs in the body, the heart is assigned the role of pumping blood with such a force that it reaches every individual cell. There are four chambers in it, with the upper two being atria and the lower ones termed as ventricles.

Organs Of The Body

Thus, the potential longevity of the human body—about years—seems to be encoded within the very cells of the body. The major tubular branches are called bronchi which gradually divide into bronchioles and alveoli — the smallest air sacs with single cell lining.

Wounds take longer to heal; some reparations take five times as long at 60 as at 10 years of age. The body includes nine major organ systems, each composed of various organs and tissues that work together as a functional unit.

In the dorsal part of the body they are temporary; in the ventral part they become permanent, forming the two pleural cavities, which house the lungs; the peritoneal cavity, which contains the abdominal organs; and the pericardial cavity, which encloses the heart.

The thoracic cage is made up of twelve uniquely curved bones, having head, neck and shaft, that collectively serve to give shape to upper part of your body as well as protection to the vital body organs.

The human body consists of trillions of cells, each capable of growth, metabolismresponse to stimuli, and, with some exceptions, reproduction. The liver, kidney and lungs are the organs that purify blood. Interestingly, the total surface area can be as large as 30 square meters.

Though not included in the list of vital organs, your eye makes you able to enjoy the soothing and fascinating colors of natural and artificial worlds around you. Urinary system The urinary system consists of the kidneysuretersbladderand urethra.

The Human Body

While running, you make use of all the leg muscles, so it is regarded as the best exercise for legs. But how is it possible?.

Powered by the heart, it is the body’s distribution system to organs with oxygen, hormones and essential nutrients that helps it function properly. Read more.

The Human Body

The major organ in the body of human beings is the brain which is primarily responsible for performing all the functions and actions of the body. Other major organs of the body are given in the following list with names, diseases, location and functions. The human body is everything that makes up, well, you.

The basic parts of the human body are the head, neck, torso, arms and legs. [Image Gallery: The BioDigital Human] Body systems. Our bodies consist of a number of biological systems that carry out specific functions necessary for everyday living.

Organs Of The Body There are almost 80 organs in a human body which vary according to their sizes, functions or actions. An organ is a collection of millions of cells which group together to perform single functions in a our body.

Human Body

The human body is an amazing structure made up of many fascinating parts and systems. Learn about the human body and how its systems work together.

The human body is the entire structure of a human being. It is composed of many different types of cells that together create tissues and subsequently organ systems. They ensure homeostasis and the viability of the human body.

Human body
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