NCERT Solutions for Class 11 Biology Chapter 21– Neural Control and Coordination will help you to ace the unsolved problems in the Class 11 Science book prescribed by the NCERT for all the schools of CBSE. It presents the best alternative and a very interesting way to learn, which helps to enhance your abilities and help to get ready for CBSE Class 11 exams.
Download NCERT Solutions for Class 11 Biology chapter 21 pdf to get access to Class 11 Biology chapter 21 NCERT solutions for we present students with chapter-wise solutions to all the questions appearing in the NCERT exam for class 11. The solutions are developed by highly qualified academic professionals having expertise in this subject.
NCERT Solutions For Class 11 Biology Chapter 21 Neural Control and Coordination
NCERT Solutions for Class 11 Biology are prepared by our expert faculties to help you to prepare for your exams in a better way and enhance your score. These NCERT Solutions provide step by step solutions for the questions given in the NCERT textbook as per CBSE Board guidelines and are also prepared according to the exam pattern.
Make use of our CBSE class 11 Biology chapter 21 NCERT solutions. Typically students just read concepts and memorize them without even grasping the actual topic. This way, students believe that they ace examinations as it is crucial to memorize. But this is not the case. Concepts are required to be understood. This is where NCERT Solutions comes to rescue. The solutions are reconstituted in a simple and easy to comprehend language, which makes concepts clearer and all the more interesting. Hence, students find tailor-made solutions easier to learn.
You can download CBSE NCERT Solutions for Class 11 Biology Chapter 21 from below.
What will you learn in CBSE Class 11 Biology Chapter 21 – Neural Control and Coordination
In NCERT Solutions for Class 11 Biology Chapter 21, you will learn about the generation and conduction of nerve impulse, the transmission of impulses, components of the central nervous system, forebrain, midbrain, hindbrain, spinal cord, autonomic nervous system, peripheral nervous system and sense organs like ears and eyes, structure, location, and function of various organs of the human nervous system like the brain, spinal cord, nerves. Let us now discuss the subtopics in detail.
21.1 – Neural System
21.2 – Human Neural System
21.3 – Neuron as Structural and Functional Unit of Neural System
21.3.1 – Generation and Conduction of Nerve Impulse
21.3.2 – Transmission of Impulses
21.4 – Central Neural System
21.4.1 – Forebrain
21.4.2 – Midbrain
21.4.3 – Hindbrain
21.5 – Reflex Action and Reflex Arc
21.6 – Sensory Reception and Processing
21.6.1 – Eye
21.6.2 – The Ear
Important Notes On Neural Control & Coordination
- Human brain is the major portion of central neural system. Which is well protected by the skull.
- The brain is surrounded by three cranial meninges
- i). Duramater – outer layer
- ii). Arachnoid – middle layer
- iii). Piamter – Inner layer-remain in contact with brain
Functions Of Parts Of Brain
- Cerebrum: Centre of intelligence, memory and imagination, reasoning, judgement, expression of will power.
- Thalamus: Acts as relay centre to receive and transmit general sensation of pain, touch and temperature.
- Hypothalamus: Centre for regulation of body temperature, urge for eating and drinking.
- Mid-brain: Responsible to coordinate visual reflexes and auditory reflexes.
- Cerebellum: Maintains posture and equilibrium of the body as well as coordinates and regulates voluntary movement.
Transmission of Impulses at Synapse
- At electrical synapses: Here the membrane of pre and post-syneptic neuron are in very close proximity. Electric current can ¯ow directly from one neuron into other across these synapses, like impulse conduction along a single axon.
- At chemical synapses: Here the membrane of pre and post-syneptic neuron are separated by fluid filled space called synaptic cleft. Neurotransmitter are involved here.
Important Terms related to Chapter 21
- Blind spot: A spot on retina which is free from rods and cones and lack the ability for vision.
- Cerebrospinal fluid: An alkaline fluid present in between inner two layer of meninges, surrounding the brain and spinal cord.
- Cerebellum: A part of hind brain that controls the balance and posture of the body.
- Cochlea: A spirally coiled part of internal ear which is responsible for hearing.
- Corpus callosum: A curved thick bundle of nerve fibres that joins two cerebral hemisphere.
- Pons: Thick bundles of fibres on the ventral side of brain below cerebellum.
- Foramen magnum: A big aperture in the skull posteriorly through which spinal cord emerges out.
- Spinal cord: A tubular structure connected with medulla oblongata of brain and situated in the neural canal of the vertebral column, covered by meninges.
- Synaptic cleft: A narrow fluid filled space which separates two membranes of the two neurons at the synapse.
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