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How the lungs work
Cut the bottom off a large bottle. Fit a cork to the neck with a Y tube in it. On every of the lower limbs of the Y tie a rubber balloon or a number of small bladder.
Tie a sheet of brown paper or sheet rubber round the bottom of the jar, with a piece of String knotted by a hole and sealed with wax. Pulling this string lowers the diaphragm and air enters the neck of the Y piece causing the balloons to dilate.
Pressing the diaphragm upwards has the opposite effect.
Explain Folic acid Folic acid is a water soluble B-vitamin that helps build healthy cells. Along with iron, this vitamin is crucial during pregnancy as you may already know
Explain the Urine Creatinine Test This test measures the amount of creatinine in urine. A measurement of the serum creatinine level is often used to evaluate kidney function. U
Explain the Liver and Biliary System The liver is the largest gland in the body. It weighs about 1500 g. It is situated in the upper part of the abdominal cavity. The liver sec
Calculate the power of a light bulb that uses 36J of electrical energy in 6 seconds.
A field trip to study erosion Find some place in the locality where running water has complete damage by cutting gulleys. Take the class to study the erosion. Why was it caused
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How Complement System Helps To Handle Microbial Invasion 1) Some components of a complement system coat microorganisms. These organisms with such a coat can be easily phagocyt
Define the Structure of Ear - The Organ of Hearing The human ear consists of three sections: the outer ear, the middle ear and the inner ear as illustrated in Figure. The oute
Explain the Hypersecretion (Hyperthyroidism) Or Thyrotoxicosis This condition generally occurs in adult life. This is commonly caused by hyperplasia of the gland and is called
solutions that can be found in home and its characteristics
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