HAIR CUTS DON'T HURT.The reason is quite simple, because hairs are made of dead cells,so we don't feel pain.The dead hair cells are filled with a tough , waterproof protein called Keratin, as are nails, and the skin flakes that we lose daily in their millions from our skin surface.All these things are part of the protective overcoat that cover and protect our body. SKIN - Skin is really thin but quite complex .Its made of two layers ; The ...
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Piranha, also called caribe or piraya, any of more than 60 species of razor-toothed carnivorous fish of South American rivers and lakes, with a somewhat exaggerated reputation for ferocity. In movies such as Piranha (1978), the piranha has been depicted as a ravenous indiscriminate killer. Most species, however, are scavengers or feed on plant material.A piranha or piraña ( / p ɪ ˈ r ɑː n j ə / , / p ɪ ˈ r æ n j ə / , or / p ɪ ˈ r ɑː n ə / ; Portuguese: [piˈɾɐ̃ɲɐ] , Spanish: [piˈɾaɲa] ), a member of family Characidae in order Characiformes, is a freshwater fish that inhabits South American rivers, floodplains, lakes and reservoirs. Although often described as extremely predatory and mainly feeding on fish, their dietary habits vary extensively, and they will also take plant material,leading to their classification as omnivorous. Piranhas belong to the subfamily Serrasalminae, which includes closely related omnivorous fis...
OUR BODY HAS A BLOOD TRANSPORT SYSTEM.It supplies the oxygen needed by the body cells and carries off their carbon-Di-oxide waste.Lungs work very hard .Every day we take. about 23,000 breaths.Lungs are connected to a wind pipe called trachea .Each comprises many branching tubes called bronchioles.The air inhaled by us passes via the trachea into the lungs.Blood in the lungs collects oxygen and takes it around the body.This air ...
Surgeons in Manchester have performed the first bionic eye implant in a patient with the most common cause of sight loss in the developed world. Ray Flynn, 80, has dry age-related macular degeneration which has led to the total loss of his central vision. He is using a retinal implant which converts video images from a miniature video camera worn on his glasses. He can now make out the direction of white lines on a computer screen using the retinal implant. Mr Flynn said he was "delighted" with the implant and hoped in time it would improve his vision sufficiently to help him with day-to-day tasks like gardening and shopping T he Argus II implant, manufactured by the US firm Second Sight, has previously been used to restore some vision to patients who are blind as a result of a rare condition known as retinitis pigmentosa. The operation, at Manchester Royal Eye Hospital, is the first time it has been implanted in a patient with age-related...
TO REMAIN HEALTHY We need lot of things;a right amount of sleep ,exercise,fresh air,healthy food and also having friends. Healthy food means not eating too much and not eating the same thing always.Our food is composed of three components ;fats,carbohydrates,and proteins.Carbohydrates like sugar and starch ,are present in potatoes,and rice.We also need vitamins and minerals,such as salt or calcium .To stay healthy also need to brush our teeth often and keep ourselves clean to keep away ...
THE WORD 'DEMOCRACY' is derived from the Greek language and it means' rule of the people'. In a democracy all citizens are free and have equal rights and duties .The fundamental idea of this form of the government comes from e }); ancient Greece .At that time ,leaders directly addressed the crowd and the decisions about the laws were made in the assemblies..In today's republics , the procedure is more elaborate and structured.Elections are held every four to five...
What Are Antibodies? Antibodies (also called immunoglobulins) are specialized proteins that travel thorough the blood stream and are found in bodily fluids. They are utilized by the immune system to identify and defend against foreign intruders to the body. These foreign intruders, or antigens, include any substance or organism that evokes an immune response. Bacteria, viruses, pollen, and incompatible blood cell types are examples of antigens that cause immune responses. Antibodies recognize specific antigens by identifying certain areas on the surface of the antigen known as antigenic determinants. Once the specific antigenic determinant is recognized, the antibody will bind to the determinant. The antigen is tagged as an intruder and labeled for destruction by other immune cells. Antibodies protect against substances prior to cell infection. Antibody Production Antibodies are produced by a type of whit...