NEET (NTA)-National Eligibility cum Entrance Test (Medical) Biology Structural Organization in Animals and Plants-Animal Tissues - Morphology, Anatomy and Functions - Mainly Cockroach Revision (Page 2 of 2)

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Process of digestion

During digestionfood is converted to simpler form. For an animal food includes polysaccharides, fats, proteins, nucleic acids, vitamins, minerals and water. Minerals, vitamins and water are diffusible foods and do not need digestion. Digestion of some foods is as follows:

  • Polysaccharides (starch) →Disaccharides (maltose, sucrose, lactose, isomaltose and dextrins) →Monosaccharides (glucose, fructose and galactose)

  • Fats →fatty acids and glycerol

  • Proteins →Peptones → Peptides→Amin

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Neural control and coordination


  • Nervous system is a well-organized system of communication that allows the individual to interact with external environment.

  • The nervous system is a very important part of the animal body that coordinates voluntary and involuntary actions of the body.

  • History of Evolution of nervous system goes about 3600 millions of years back.

  • Life evolved from the unicellular organism to the most complex form. All systems evolved but Nervous System evolved very rapidly a

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