Hormones and Endocrine System in Adolescence
Explore the fascinating world of hormones and endocrine glands, including the role of pituitary, thyroid, pancreas, and adrenals. Learn how these glands produce essential hormones like insulin, thyroxine, and adrenaline, influencing growth, metabolism, and stress response. Discover the importance of hormones in insect metamorphosis and frog development.
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Presentation Transcript
CHAPTER 10 REACHING THE AGE OF ADOLESCENCE CLASS VIII MODULE 4 PREPARED BY A K MISHRA TGT/SS AECS-3,MUMBAI
* Apart from the Pituitary, the testes and the ovaries , there are other endocrine glands in the body such as thyroid, pancreas and adrenals. Thyroid gland produces thyroxinewhich prevents goitre. * Endocrine part of Pancreas secretes insulin.
* A person was suffering from diabetes because pancreas was not producing the hormone insulin in sufficient quantities. * Adrenal glands secrete hormones which maintain the correct salt balance in the blood.
* Adrenals also produce the hormone adrenalin. * It helps the body to adjust to stress when one is very angry, embarrassed or worried.
*Thyroid and adrenals secrete their hormones when they receive orders from the pituitary through its hormones. * Pituitary also secretes growth hormone which is necessary for the normal growth of a person.
HORMONES AND THEIR FUNCTIONS
ROLE OF HORMONES IN COMPLETING THE LIFE HISTORY OF INSECTS AND FROGS METAMORPHOSIS- The change from larva to adult is called metamorphosis. In insects, metamorphosis is controlled by insect hormones. In a frog, it is controlled by thyroxin, the hormone produced by thyroid. Thyroxine production requires the presence of iodine in water.
* If the water in which tadpoles are growing does not contain sufficient iodine, the tadpoles cannot become adult.
END OF MODULE 4
