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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.
Define age related changes in Cardiovascular system There is a decrease in elasticity of the aorta and other large arteries as age increases. Thickness of blood vessels increas
can you explain to me the mohs hardness scale ?
Importance of Parent materials Different rocks or parent materials placed under similar climatic conditions give rise to soils which are very similar to one another. On the o
Sinking bodies Fill the overflow can with water to the level of the spout. Select a stone that will go inside the overflow can. Attach a string to the stone and weigh it with a
Question 1 What is the role of Clinical Research Associate (CRA) in a Clinical Research Organization? Question 2 List the events prior to Site Close Out. What is the role of
What is CEC The CEC of most soils increases with pH, below pH 6.0 the charge for clay mineral is relatively constant, while above pH 6.0 the charge on the mineral colloid incr
Explain Precipitation - Antigen-Antibody Interaction If Ag-Ab are present in an appropriate ratio, they form a precipitate in blood. Turbidity is developed, this can be measure
Important physico-chemical properties of biotin include the following: a) It forms colourless, needle shaped crystals. b) The vitamin is sparingly soluble in cold water
Define the functions of the Macrophages The macrophages: 1) phagocytose microorganisms and inert particles 2) secrete IL-1 (Interlukin I), TNF (tumor necrosis factor),
To provide an estimate of Mr. X's premorbid level of intellectual functioning, the Hopkins Adult Reading Test was administered. He received a raw score of XX (standard score of 119
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