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| 1. |
There is a close coordination between nerves and hormones . Explain in brief. |
| Answer» In\thuman\tbeings,\tthe\tcontrol\tand\tcoordination\tis\tbrought\tabout\tby\tboth\tnervous system\tand\tendocrine\tsystem.\tThe\tnervous\tsystem\tworks\tby\tthe\tgeneration\tand transmission\tof\telectrical\timpulse\twhile\tthe\tendocrine\tsystem\tworks\tby\tsecreting chemical\tmessengers\tcalled\thormones.\tThese\tsystems\tcomplement\tthe\taction\tof\teach other\tto\tcontrol\tand\tcoordinate\tdifferent\tfunctions\tof\tour\tbody.\tThe\tendocrine\tand neural\tsystem\tworks\tin\ttandem\tfor\tthe\tnormal\tfunctioning\tof\tour\tbody. E.g.\tThe\tpresence\tof\tfood\tin\tour\tstomach,\tdistends\tthe\tgastric\twall.\tThis\tresults\tin secretion\tof\tgastric\thormone\twhich\tstimulates\tgastric\tjuice\tsecretion\tin\tthe\tstomach. Likewise,\tan\tincrease\tin\tthe\tconcentration\tof\tadrenaline\tstimulates\tthe\trespiratory centre\tof\tthe\tbrain.\tThis,\tin\tturn\tincreases\tthe\tbreathing\trate\tof\tan\tindividual. | |