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Revision Notes
Coordination and Control — Revision Notes
Telangana Open School (TOSS) · Class 12 · Biology
Coordination and Control revision notes for Telangana Open School (TOSS) Class 12 Biology: 4 topics in quick points.
43 questions35 flashcards5 concepts
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Key Topics to Revise
1
The Human Neural System
- The neural system is made up of specialized cells called neurons that detect, receive, and transmit stimuli.
- It is divided into the Central Nervous System (CNS) and Peripheral Nervous System (PNS).
- CNS includes the brain and spinal cord; it processes information and controls responses.
2
Central Nervous System (CNS): Brain and Spinal Cord
- Brain is protected by the skull and covered by three meninges: dura mater, arachnoid mater, and pia mater.
- Brain has three main parts: Forebrain, Midbrain, and Hindbrain.
- Forebrain includes cerebrum, thalamus, and hypothalamus. Cerebrum controls thinking, memory, and voluntary actions.
3
Autonomic Neural System (ANS)
- ANS controls involuntary actions and is divided into sympathetic and parasympathetic systems.
- Sympathetic system prepares the body for 'fight or flight' — increases heart rate, dilates pupils, inhibits digestion.
- Parasympathetic system promotes 'rest and digest' — slows heart rate, constricts pupils, stimulates digestion.
4
Generation and Conduction of Nerve Impulse
- Neurons are polarized at rest — inside is negative, outside is positive due to ion distribution.
- Resting potential is maintained by Na⁺-K⁺ pump (3 Na⁺ out, 2 K⁺ in).
- When stimulated, Na⁺ channels open, causing depolarization (action potential).
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Full NotesKey Concepts
The CNS consists of the brainNeurons are specialized cells that transmitA reflex is an automaticThe endocrine system consists of glandsSense organs like the eye
Frequently Asked Questions
What are the important topics in Coordination and Control for Telangana Open School (TOSS) Class 12 Biology?
Key topics in Coordination and Control include The Human Neural System, Central Nervous System (CNS): Brain and Spinal Cord, Autonomic Neural System (ANS), Generation and Conduction of Nerve Impulse. Study these first, then practise questions on each for the Telangana Open School (TOSS) Class 12 board exam.
How should I revise Coordination and Control for the Telangana Open School (TOSS) Class 12 board exam?
Learn the core ideas first, then work through the 43 practice questions on Coordination and Control. 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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