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nervous system questions

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Biology - Nervous System (Solved) Disable Pop up Blockers to View Solution Question .1. Name the following : (i) Transfers impulses from inner ear to brain. (ii) The part of brain which is concerned with memory. (iii) The protective covering of the brain. (iv) The junction between two nerve cells. (v) The fluid that is present inside and outside the brain. (vi) Protective covering of the brain and spinal cord. Answer : Click Here Question .2. Write true or false. Insert a word if false. (i) A reflex action is a spontaneous response to a stimulus. Answer : Click Here Question .3. Define Synapses. Answer : Click Here Question .4. Choose : The dorsal root ganglion of the spinal cord contains cell bodies of (motor, sensory, intermediate) neurons. Answer : Click Here Question .5. Write the structural and functional activity of : (i) Cerebellum. (ii) Myelin sheath. (iii) Meninges. Answer : Click Here Question .6. Write the function of Medulla oblongata. Answer : Click Here Question .7.Write in logical sequence : (i) Dorsal root ganglion, receptor, effector, ventral root ganglion, associated neuron. Answer : Click Here Question .8. Differentiate between : (i) Medulla oblongata and Cerebellum. (ii) Cerebrum and spinal cord. (iii) Cerebrum and Cerebellum. (iv) Sensory and motor neuron. (v) Sensory and motor nerve. Answer : Click Here Question .9. Write the category and the odd one out : (i) Coughing, sneezing, blinking, eating. (ii) Corpus luteum, corpus callosum, pons, cerebellum. (iii) Pleura, pericardium, meninges, spinal cord. (iv) Pons, cerebellum, medulla oblongata, cerebrum. Answer : Click Here Question .10. Answer briefly : (i) What is meant by reflex action ? (ii) State simple, conditioned reflexes or none. Sneezing, blushing, contraction of pupil, lifting up a book, knitting without looking, sudden application of brakes without thinking. Answer : Click Here Question .11. Draw a labelled diagram of a myelinated neuron. Answer : Click Here Question . 12. The following diagram is that of a human brain. Guidelines 1 to 5 indicate different parts of the surface of the brain and these are as follows: Fig. 1. Frontal lobe of cerebrum. 2. Temporal lobe of cerebrum. 3. Occipital lobe of cerebrum. 4. Cerebellum. 5. Medulla oblongata. Study the diagram and answer the following questions : I. What handicaps would result from : (i) Damage to part numbered 3 ? (ii) Damage the part numbered 4 ? II Mention one main function of each of the parts numbered 1, 2 and 5. Answer : Click Here Question .13. The following diagram represents the human brain as seen in an external view. Study the same and then answer the question that follow : Fig. (i) Name the parts labelled 1, 2, 3 and 4. (ii) Mention the difference in the arrangement of the nerve cells in the parts marked 1 and 4 . (iii) What is the main function of the parts marked 3 and 4 . (iv) Name the sheet of nerve fibres that connect the two halves of the part labelled 1 . (v) What is the structural and functional unit of the nervous system ? (vi) Name the fluid that surrounds the brain. State its function.

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