Class 11 Biology — Chapter 18: Neural Control And Coordination
Chapter 18: Neural Control And Coordination is a chapter in Class 11 Biology (NCERT), part of the CBSE NCERT curriculum followed by over 25 million students across India. This chapter covers 6 topics including Introduction to Neural Coordination, Organization of the Human Neural System, Structure of a Neuron. BrainWeave provides free AI-powered explanations — by voice or text, in Hindi or English — with no signup required.
What you'll learn
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▸Introduction to Neural Coordinationcoordinationhomeostasisneural systemendocrine system
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▸Organization of the Human Neural SystemCore conceptCNSPNSsomatic neural systemautonomic neural systemafferent fibresefferent fibres
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▸Structure of a NeuronCore conceptneuroncell bodydendritesaxonNissl's granules
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▸Types of Neurons and AxonsCore conceptmultipolarbipolarmyelinatednodes of RanvierSchwann cells
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▸Resting Membrane PotentialCore conceptresting potentialpolarized membranesodium-potassium pumpion channelsaxoplasm
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▸Action Potential and Nerve Impulse ConductionCore conceptaction potentialnerve impulsedepolarizationstimulusNa+ influx
Chapter Summary
Understand the concept of coordination for maintaining homeostasis and the roles of the neural and endocrine systems in integrating organ functions.
Distinguish between the Central Neural System (CNS) and Peripheral Neural System (PNS). Further, understand the subdivisions of the PNS into somatic and autonomic systems, and the autonomic system into sympathetic and parasympathetic divisions.
Identify the primary parts of a neuron: the cell body (soma) containing Nissl's granules, dendrites for receiving signals, and the axon for transmitting signals, terminating in synaptic knobs.
Classify neurons as multipolar, bipolar, or unipolar based on their structure. Differentiate between myelinated and non-myelinated axons, understanding the role of Schwann cells, myelin sheath, and nodes of Ranvier.
Explain how a neuron's membrane is polarized at rest. This involves understanding the differential permeability to Na+ and K+ ions, the concentration gradients, and the crucial role of the active sodium-potassium pump.
Describe the sequence of events that generate and conduct a nerve impulse. This includes stimulus application, depolarization due to rapid Na+ influx, reversal of polarity, and the propagation of this action potential along the axon.
Practice Questions from this Chapter
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- Explain how neurons communicate. Get Solution →
- Explore nerve damage effects. Get Solution →
- Discover how brains learn. Get Solution →
- What are the two main parts of the human neural system as described in the text? Get Solution →
- Which part of a neuron contains the nucleus and granular bodies called Nissl's granules? Get Solution →
- According to the chapter, what is the function of afferent nerve fibers? Get Solution →
- Chemicals stored in synaptic vesicles that are involved in the transmission of impulses are called what? Get Solution →
- The gaps between two adjacent myelin sheaths on an axon are called: Get Solution →
Did you know?
- 💡 Your brain holds more neurons than stars in our galaxy.
- 💡 A baby's brain triples its size in just the first year.
- 💡 Nerve impulses can travel over 200 miles per hour.
- 💡 Your gut contains a 'second brain' called the enteric nervous system.
- 💡 Most neurons do not divide, staying with you for your entire life.
Frequently Asked Questions
How many topics are covered in this chapter?
This chapter covers 6 key topics: Introduction to Neural Coordination, Organization of the Human Neural System, Structure of a Neuron, Types of Neurons and Axons, Resting Membrane Potential, and more. The BrainWeave AI tutor explains each one with examples.
Is Chapter 18: Neural Control And Coordination important for board exams?
Class 11 is a foundation year. Mastering this chapter now will help you build strong fundamentals for the higher classes.
Can I get NCERT solutions for this chapter in Hindi?
Yes. BrainWeave's AI tutor supports Hindi, English, and Hinglish for both voice and text chat. Just ask your question in your preferred language.
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