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Chapter 19 of 19
Syllabus

Chemical Coordination and Integration — Syllabus

CBSE · Class 11 · Biology

What Chemical Coordination and Integration covers in CBSE Class 11 Biology: 4 topics, for the 2026-27 session. Part of the CBSE Class 11 Biology syllabus.

115 questions82 flashcards5 concepts

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4 Topics · CBSE Class 11 Biology · 2026-27

Topics in Chemical Coordination and Integration

1

1. Endocrine System: Basic Ideas

  • Endocrine glands lack ducts and are therefore called ductless glands.
  • Hormones are non-nutrient chemicals which act as intercellular messengers and are produced in trace amounts.
  • Hormones are released into the blood and act on specific target tissues.
2

2. Hypothalamus and Pituitary Gland

  • The hypothalamus is the basal part of the diencephalon in the forebrain.
  • Hypothalamic hormones are of two types: releasing hormones and inhibiting hormones.
  • Releasing hormones stimulate pituitary hormone secretion.
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3. Pineal, Thyroid, Parathyroid, and Thymus

  • The pineal gland is located on the dorsal side of the forebrain.
  • Pineal secretes melatonin.
  • Melatonin regulates a 24-hour diurnal rhythm.
4

4. Adrenal Gland

  • Each adrenal gland lies above a kidney.
  • The adrenal gland has an outer adrenal cortex and a central adrenal medulla.
  • The adrenal medulla secretes adrenaline and noradrenaline.

Key Concepts

Central concept: Chemical Coordination and Integration

Endocrine systemHypothalamusPituitary glandPineal glandThyroid glandParathyroid glandThymusAdrenal gland

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Frequently Asked Questions

What are the important topics in Chemical Coordination and Integration for CBSE Class 11 Biology?
Key topics in Chemical Coordination and Integration include Endocrine System: Basic Ideas, Hypothalamus and Pituitary Gland, Pineal, Thyroid, Parathyroid, and Thymus, Adrenal Gland. Study these first, then practise questions on each for Class 11 exams.
How should I revise Chemical Coordination and Integration for Class 11 exams?
Learn the core ideas first, then work through the 115 practice questions on Chemical Coordination and Integration. Revise definitions regularly and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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