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Respiratory System - Developmental Changes after Birth
The new-born's lungs are collapsed and need powerful breaths to inflate them; airways too are small, offering remarkable resistance to flow of air. The surface tension tends to hold the moist membranes together. The lungs of a full term baby secrete surfactant that has the unique property of exerting high surface tension while the lungs an expanded but a low surface tension while the lungs are collapsed. So after the first powerful breath which expands the lungs, breathing becomes easier, due to the reduced surface tension of collapsed lungs.
Creb binding protein (CBP) is a histone acetyl transferase (HAT) protein. What role does the addition of acetyl groups to histones play during development? A. The addition of
Define Criteria for Assessment of Vitamin K Status? The parameters of blood clotting time and prothrombin time are used as criteria to assess vitamin K status as this vitamin
A fifth member of the monoamine transmitter group is histamine. That release histamine as their neurotransmitter is located in the hypothalamus and project to cerebral cortex, lim
Q. Protein Requirement in chronic diarrhoea? Requirements are increased only in chronic diarrhoea because of associated tissue depletion. An additional 10 g of protein may be r
Lungs - Respiration Lungs can be simple, characterised by air exchange with surrounding environment by diffusion only. These are called the diffusion lungs and are present in
To test the effects of temperature on the activity of yeast Make up a quantity of bread dough .Stir a yeast cake in water and methodically mix the yeast with the dough. Divide
the function of contractil vacuole
How many pairs of electrons do the two oxygen atoms in an oxygen molecule share with each other? Explain your answer. The oxygen atoms share two pairs of electrons, sinc
Applications : The first operation conducted was ligation of a patent ductus arteriosus through a left thoracotomy. Same approach is used for repair of coarctation of the aorta,
Suppose that a portion of double-stranded DNA in the middle of a large gene is being transcribed by an RNA polymerase. As the polymerase moves through the sequence of six bases sho
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