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Coordination and Control

Telangana Board · Class 12 · Biology

Quick revision notes for Coordination and Control — Telangana Board Class 12 Biology. Key concepts, formulas, and definitions for last-minute revision.

44 questions28 flashcards5 concepts

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Key Topics to Revise

1

Neural System - Structure and Organization

  • The neural system consists of specialized cells called neurons that detect, receive, and transmit stimuli
  • Human neural system is divided into: Central Nervous System (CNS) - brain and spinal cord, and Peripheral Nervous System (PNS) - all nerves outside CNS
  • PNS contains afferent fibers (carry impulses to CNS) and efferent fibers (carry impulses from CNS)
2

Brain Structure and Functions

  • Brain is protected by cranial meninges: dura mater (outer), arachnoid mater (middle), pia mater (inner)
  • Forebrain includes: Cerebrum (largest part with cerebral cortex), Diencephalon (thalamus, hypothalamus, epithalamus)
  • Midbrain contains cerebral peduncles and corpora quadrigemina (superior and inferior colliculi)
3

Nerve Impulse Generation and Transmission

  • Resting potential: -70mV, maintained by Na+/K+ pump (3 Na+ out, 2 K+ in)
  • Action potential generation: Na+ channels open → depolarization → K+ channels open → repolarization
  • Impulse conduction occurs as wave of depolarization along axon membrane
4

Sense Organs - Eye and Ear

  • Eye structure: Sclera (outer), Choroid (middle), Retina (inner) with photoreceptors
  • Retina contains rods (dim light vision) and cones (bright light and color vision)
  • Fovea has highest concentration of cones; blind spot has no photoreceptors

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Full Notes

Key Concepts

The human neural system is dividedThe brain consists of three majorNeurons conduct electrical impulses through changesReflexes are automaticSpecialized receptor cells detect different types

Frequently Asked Questions

What are the important topics in Coordination and Control for Telangana Board Class 12 Biology?
Coordination and Control covers several key topics that are frequently asked in Telangana Board Class 12 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Coordination and Control — Telangana Board Class 12 Biology?
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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