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Chapter 12 of 16
Revision Notes

Endocrine System

ICSE · Class 10 · Biology

Quick revision notes for Endocrine System — ICSE Class 10 Biology. Key concepts, formulas, and definitions for last-minute revision.

45 questions25 flashcards5 concepts

Key Topics to Revise

1

Introduction to Glands and Hormones

  • Glands are groups of secretory tissues classified into exocrine and endocrine types
  • Exocrine glands have ducts and release secretions into target organs (liver, salivary glands)
  • Endocrine glands are ductless and release hormones directly into blood
2

Comparison: Nervous vs Endocrine System

  • Both systems control and coordinate body activities and provide communication
  • Nervous system: Fast conduction, localized effect, short-lived response, direct pathway
  • Endocrine system: Slow conduction, widespread effect, long-lasting response, bloodstream pathway
3

Pituitary Gland - The Master Gland

  • Pea-sized whitish gland (5g) hanging from hypothalamus by infundibulum
  • Three parts: anterior lobe (adenohypophysis), posterior lobe (neurohypophysis), intermediate lobe
  • Anterior lobe is glandular tissue; posterior lobe is nervous tissue
4

Growth Hormone Disorders

  • Hypo-secretion in children: Dwarfism (short stature, normal mental development)
  • Hyper-secretion in children: Gigantism (excessive height 7-8 feet)
  • Hyper-secretion in adults: Acromegaly (broad flat bone ends, negroid appearance)

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Full Notes

Key Concepts

Hormones are chemical messengers produced byLocated below hypothalamusHBoth endocrine and exocrine functionsPaired glands on top of kidneys

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Frequently Asked Questions

What are the important topics in Endocrine System for ICSE Class 10 Biology?

Endocrine System covers several key topics that are frequently asked in ICSE Class 10 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.

Start by understanding all key concepts. Practise previous year questions from this chapter. Revise formulas and definitions regularly. Use flashcards for quick revision before the exam.

Sources & Official References

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