Transcription of NIT 5 - NCERT
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UNIT 5. HUMAN PHYSIOLOGY. Chapter 16 The reductionist approach to study of life forms resulted in increasing digestion and Absorptionuse of physico-chemical concepts and techniques. Majority of these studies employed either surviving tissue model or straightaway cell- Chapter 17 free systems. An explosion of knowledge resulted in molecular biology. Breathing and Exchange Molecular physiology became almost synonymous with biochemistry of Gases and biophysics. However, it is now being increasingly realised that neither a purely organismic approach nor a purely reductionistic Chapter 18 molecular approach would reveal the truth about biological processes Body Fluids and or living phenomena.
The process of digestion is accomplished by mechanical and chemical processes. The buccal cavity performs two major functions, mastication of food and facilitation of swallowing. The teeth and the tongue with the help of 262 BIOLOGY saliva masticate and mix up the food thoroughly. Mucus in saliva helps
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