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Control and Coordination

NIOS · Class 10 · Science & Tech

Quick revision notes for Control and Coordination — NIOS Class 10 Science & Tech. Key concepts, formulas, and definitions for last-minute revision.

44 questions20 flashcards5 concepts

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A detailed labeled diagram of a multipolar neuron, showing the cell body (soma), dendrites, axon, axon hillock, myelin sheath, Schwann cells, Nodes of Ranvier, and axon terminal with synaptic knobs.
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Key Topics to Revise

1

Nervous System Basics

  • Nervous system detects stimuli (changes in environment) and produces appropriate responses
  • Two main divisions: Central Nervous System (CNS) - brain and spinal cord, and Peripheral Nervous System (PNS) - all nerves
  • Basic unit is the neuron (nerve cell) with three parts: dendrites (receive impulses), cell body (processes information), and axon (transmits impulses)
2

Central Nervous System

  • Brain is protected by skull bones and three membranes called meninges filled with cerebrospinal fluid
  • Cerebrum: Largest part, controls voluntary actions, thinking, memory, and intelligence. Has grey matter (cell bodies) outside and white matter (nerve fibers) inside
  • Cerebellum: Controls balance, posture, and coordination of muscular movements
3

Reflex Actions and Peripheral Nervous System

  • Reflex actions are automatic, immediate responses to stimuli that don't involve conscious thinking
  • Two types: Natural reflexes (inborn like breathing, blinking) and Conditioned reflexes (learned like salivating at food smell)
  • Reflex arc pathway: Stimulus → Receptor → Sensory neuron → Spinal cord → Motor neuron → Effector → Response
4

Endocrine System and Hormones

  • Endocrine glands secrete hormones directly into blood stream to reach target organs
  • Hormones are chemical messengers that control growth, development, metabolism, and reproduction
  • Pituitary gland (master gland): Controls growth and reproductive development, secretes growth hormone and gonad-stimulating hormone

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Full Notes

Key Concepts

Neurons are the basic unitsThe CNS includes the brainReflexes are rapidThis system uses hormones (chemical messengers)This controls involuntary functions through two

Frequently Asked Questions

What are the important topics in Control and Coordination for NIOS Class 10 Science & Tech?
Control and Coordination covers several key topics that are frequently asked in NIOS Class 10 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Control and Coordination — NIOS Class 10 Science & Tech?
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.

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