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Chemical Coordination and Integration

Long Answer Type

81.

Write the name and the source of hormones regulating the following :

(a) Uterine changes in pregnancy.
(b) Urinary elimination of water.
(c) Metamorphosis of tadpoles.
(d) Plasma Ca⁺² level.
(e) Na⁺ and K⁺ metabolism.
(f) Blood sugar level.
(g) Uterine contractions at the time of child's birth.

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Short Answer Type

82. Write a note on adrenocroticotrophin hormone, thyroid stimulating hormone.

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Long Answer Type

83. Discuss somatotrophic or growth hormone. State the abnormalities cause due to hyposecretion or hypersecretion of growth hormone?

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84. Why is the endocrine system considered a chemical extension of the nervous system ?

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85. Briefly explain about pancreas.

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86. Explain diabetes mellitus.

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87. What are the principal hormones produced by the anterior pituitary? What function does each serve ?

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88. Describe the hormones secreted by ovaries.

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89. What hormones are secreted by the posterior pituitary gland ? What function does each serve ? Where are these hormones actually produced ?

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Short Answer Type

90. Give one example of pairs of antagonistic hormones associated with basal metabolism ? How does each pair function?

Antagonistic hormones : These are the hormones which function in opposition to each other. Examples :

1. Insulin and glucagon are antagonistic to each other.

Insulin brings glycogenesis and lowers blood sugar level by changing glucose into glycogen.

Glucagon brings glycogenolysis and raises blood sugar level by changing glycogen into glucose.

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