Cheat sheet · Class 11 · CBSE · Science Biology
Chemical Coordination and Integration cheat sheet
The whole chapter on one page: key formulas, facts and the points to remember, for quick revision before a test.
CBSE Class 11 · Biology
Cheat sheet
Chapter 19Chemical Coordination and Integration
Pituitary is the master gland — but the hypothalamus controls it.
1. Endocrine Glands
| Gland | Hormones | Disorders |
|---|---|---|
| Hypothalamus | releasing / inhibiting hormones | — |
| Pituitary | GH, TSH, ACTH, FSH, LH, PRL; ADH, oxytocin (posterior) | gigantism, dwarfism, diabetes insipidus |
| Pineal | melatonin | — |
| Thyroid | T₃, T₄, calcitonin | goitre, cretinism, Graves' disease |
| Parathyroid | PTH (raises Ca²⁺) | tetany |
| Thymus | thymosins | — |
| Adrenal | adrenaline (medulla), cortisol, aldosterone (cortex) | Addison's disease |
| Pancreas | insulin (β), glucagon (α) | diabetes mellitus |
| Gonads | testosterone; oestrogen, progesterone | — |
2. Mechanism
- Protein hormones: membrane receptors, second messenger (cAMP).
- Steroid hormones: intracellular receptors, act on genes.
3. Key Points
- Adrenaline: ‘fight or flight’.
- Insulin lowers blood glucose.
- Heart, kidney, GI tract also make hormones.
- Iodine deficiency causes goitre.
Remember: Gland → hormone → disorder table | hormone action
Chemical Coordination and Integration: questions and notes
More Class 11 · CBSE · Science Biology cheat sheets
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- Plant Growth and Development
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- Chemical Coordination and Integration
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