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PHYSIOLOGY AND HEALTH

Physiological Terms Abdomen is the largest interior cavity of the body below the throat from which it is separated by the diaphragm. Aorta is the large...

INVENTIONS AND DISCOVERIES

Adding Machine, 1642. Inventor: Blaise Pascal (France) (1623-62). Earliest commercial machine invented by William Burroughs (USA) in St. Louis, Missouri in 1885. Addressograph, 1893. Inventor:...

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PHYSIOLOGY AND HEALTH

Physiological Terms Abdomen is the largest interior cavity of the body below the throat from which it is separated by the diaphragm. Aorta is the large...

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PHYSIOLOGY AND HEALTH

Physiological Terms Abdomen is the largest interior cavity of the body below the throat from which it is separated by the diaphragm. Aorta is the large...

Immune System, antibodies and vaccines

We are surrounded by pathogens of various diseases but we don’t get sick too often. Through the course of evolution, we have got a...

INVENTIONS AND DISCOVERIES

Adding Machine, 1642. Inventor: Blaise Pascal (France) (1623-62). Earliest commercial machine invented by William Burroughs (USA) in St. Louis, Missouri in 1885. Addressograph, 1893. Inventor:...

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Ebola virus

Ebola virus (EBOV) is the sole member of the Zaire ebolavirus species and the most dangerous of the five known viruses within the genus Ebola virus. Four of the five known...

The Greenhouse Effect

The greenhouse effect is a process by which thermal radiation from a planetary surface is absorbed by atmospheric greenhouse gases, and is re-radiated in...

SPACE AND OUTER SPACE

 The term space is used to denote the entire Universe, i.e., the Earth and if§ atmosphere, the Moon, the Sun and the rest of...

EVERYDAY SCIENCE

Q. Why is fire extinguished by sodium bicarbonate? A. Sodium bicarbonate decomposes on heating to produce carbon dioxide gas. The gas is neither combustible nor...

Numbers in Human Body

¤ Number of bones – 206. ¤ Number of ribs – 24. ¤ Number of bones in skull – 22. ¤ Number of bones in face –...

Human Intelligence : Interaction of Genetic and Environment

Human intelligence is not only difficult to measure; it's also difficult to define. Human intelligence is shaped by both internal genetic factors and external...

Classification of Food

1. Carbohydrates: Sugar, honey, starch, potatoes, rice, wheat, etc., are carbohydrates. They are compounds of carbon, hydrogen, oxygen, sugar, starch, etc. They provide about...

NERVOUS SYSTEM

NERVOUS SYSTEM Nervous system controls and regulates the activities of all the other systems of body. It coordinates the reception of external stimuli and responds...

RESPIRATORY SYSTEM

RESPIRATORY SYSTEM Breathing involves intake of oxygen (inspiration) from atmospheric air and expulsion of carbon dioxide (expiration). The respiratory system is composed of nostrils, wind...

BLOOD CIRCULATION

BLOOD CIRCULATION Composition of blood: Blood is made up of fluid called plasma (60%) and a greater number of blood cells called corpuscles (40%). Plasma is...

Scientific Instruments

Altimeter is a special type of aneroid barometer, used in measuring altitudes. Ammeter is an instrument to measure the strength of an electric current. Amplifier is...

Scientific measures 2

Bar: Unit of atmospheric pressure; one bar is equal to a pressure of 106 dynes per sq cm. Calorie : Unit of heat. It is...