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Neural Control and Coordination Test - 69

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Neural Control and Coordination Test - 69
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  • Question 1
    1 / -0
    Nissl granules are mostly present in 
    Solution
    A Nissl body is a large granular body found in neurons. These granules are rough endoplasmic reticulum (RER) with rosettes of free ribosomes and are the site of protein synthesis. These are present in cyton of the nerve cell.
    So, the correct answer is option B.
  • Question 2
    1 / -0
    If the corpus callosum is removed in mammalian brain then what will be affected?
    Solution
    The corpus callosum is a bundle of nerve fibres found in the mammalian brain. It connects the left and right hemispheres of the brain and is responsible for most of the communication between the two. It is composed of white matter, that is, myelinated nerve cells, or axons, whose primary function is to connect grey areas together with neural impulses. The corpus callosum is the largest white matter structure in the brain, found in its interior. Grey matter occupies the periphery. Hence, if the corpus callosum is removed in the mammalian brain, then the communication between cerebral hemispheres will be lost.
  • Question 3
    1 / -0
    Hearing is controlled by the ?
    Solution
    The temporal lobe controls hearing. The temporal lobe is located below the lateral fissure on both hemispheres of the brain.
  • Question 4
    1 / -0
    The sympathetic nervous system (S.N.S) work through secretion of 
    Solution
    The sympathetic nervous system works for neuronal and hormonal stress response. These type of response is also called as fight-or- flight type of response or sympatho-adrenal type of response. This response occurs at the pre-ganglionic sympathetic fibres. These fibres end in the adrenal gland. These fibres secrete acetylcholine which thereby, starts the activation and secretion of adrenaline and noradrenaline. Acetylcholine stimulates the muscles. Adrenaline and noradrenaline stimulate the organs such as heart and kidney.
    So, the correct answer is option D.
  • Question 5
    1 / -0
    Which part of cerebrum converts short term memory into long term memory?
    Solution
    The hippocampus is a section of the temporal lobe, responsible for converting short-term memories into long-termed memories. The hippocampus works with the amygdala for memory storage and damage to the hippocampus may lead to amnesia (memory loss).
  • Question 6
    1 / -0
    If Broca's area is injured then what will happen firstly?
    Solution
    Broca's area is the area in the left frontal lobe of the brain. It is responsible for the spontaneous and motor speech control. When the Broca's are is affected due to injury, there are problems related to speech. The person suffers from Aphasia. The disorder causes inability to speak and problems in writing. 
    Therefore, the correct answer is option C. 
  • Question 7
    1 / -0
    Voluntary activities of body are controlled by 
    Solution
    The cerebrum is the largest part of the forebrain. It is responsible for the integration of complex sensory and neural functions and the initiation and coordination of voluntary activity in the body. It has specific functional lobe which is controls speech, generates several responses to different stimulus. 
    So, the correct answer is option B.
  • Question 8
    1 / -0
    The name of nervous band connecting the cerebral hemispheres in rabbit is 
    Solution
    The corpus callosum is a bundle of nerve fibres found in the mammalian brain. It connects the left and right hemispheres of the brain and is responsible for most of the communication between the two. It is composed of white matter, that is, myelinated nerve cells, or axons, whose primary function is to connect grey areas together with neural impulses. So, the correct answer is option B.
  • Question 9
    1 / -0
    If cerebral hemispheres of rabbit are removed, then it will
    Solution
    There are various motor control areas in the cerebral hemispheres. When the hemispheres of rabbit are removed, then the rabbit shows basic movements. But the major activities like memory and other functional activities are affected. So, the rabbit will die after some time due to loss of the functional areas in the cerebrum. 
    Thus, the correct answer is option B.
  • Question 10
    1 / -0
    Which part of the brain is affected first in a drunk person?
    Solution
    The first part of the brain alcohol hits is the cerebral cortex. Because the cerebral cortex controls conscious thought, language and social interaction, these aspects of our personality begin to run less efficiently under the influence of alcohol.
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