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Neural Control and Coordination Test - 62

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Neural Control and Coordination Test - 62
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  • Question 1
    1 / -0
    Snail moves with the help of its:
    Solution
    $$\textbf{Correct option:}$$ Option C

    $$\textbf{Explanation for correct option:}$$
    Option C
    $$\bullet$$ The snail is a soft-bodied animal. 
    $$\bullet$$ A snail moves only with the help of a muscular foot.

    $$\textbf{Explanation for incorrect options:}$$
    Option A: The shell provides protection to the body of the snail.

    Option B:  Snails do not have a skeletal system.

    Option D: Only the foot is responsible for the movement of the snail, not the entire body.

    $$\textbf{Conclusion:}$$ Snail moves with the help of its muscular foot.
  • Question 2
    1 / -0
    How many types of neurons are present in the body?
    Solution
    There are three types of neuron based on their function,
    1. Sensory neurons - carry information from the sense organs to the brain.
    2. Intermediate neurons - connectors between sensory and motor neurons.
    3. Motor neurons - carry information from the CNS to the sensory organ.
    So, the correct answer is 'Three'
  • Question 3
    1 / -0
     Which of the following is not involved in Knee-jerk reflex? 
    Solution
      Knee-jerk reaction is controlled at the level of spinal cord. The reflex action involves the spinal cord, Muscle spindle, Motor neuron and inter neurons.
    So, the correct answer is 'Brain'
  • Question 4
    1 / -0
    Involuntary functions are controlled by which part of the brain?
    Solution
    Involuntary functions like breathing, cardiac cycle, vasodialation etc, and reflexes like coughing, sneezing, vomiting etc are controlled by the Medulla.
    So, the correct answer is 'Medulla'
  • Question 5
    1 / -0
    The eardrum is a ________.
    Solution
    When sound enters it, it travels down a canal at the end of which there is a thin stretched membrane. It is called the eardrum, hence option $$B$$ is correct.
  • Question 6
    1 / -0
    Human eye ball consists of three layers and it encloses
    Solution
    (A) Correct answer (B)
    (B) Explanation of correct answer:
    The human eyeball is made up of three layers: sclera, choroid, and retina, which surround the lens, aqueous humor, and vitreous humor.

    • Lens: The transparent structure behind the pupil is called a lens. 
    • Aqueous humor: Aqueous humor is a clear, watery fluid that exists between the cornea and the lens.
    • Vitreous humor: Vitreous humor is a clear fluid that fills the space between the lens and the retina.

  • Question 7
    1 / -0
    The correct sequence of meninges from outer to the inner side is
    Solution
    The outer layer of the meninges is called the dura mater. It is tough and thick and it can restrict the movement of the brain within the skull. This protects the brain from movements that may stretch and break brain blood vessels. The middle layer of the meninges is called the arachnoid. The inner layer, the one closest to the brain, is called as the pia mater.
  • Question 8
    1 / -0
    If a person has lost his memory in an accident, which of the following part of the brain have gotten injured?
    Solution
    If a person has lost his memory in an accident because cerebrum has got injured. The cerebrum or cortex is the largest part of the human brain, associated with higher brain function such as thought and action. 
    The cerebrum is divided into four regions called lobes that control senses, thoughts, and movements. The four lobes are the occipital, temporal, frontal, and parietal lobes. Although each lobe has a different task to perform, they all must work together. Thus, the correct answer is option D.
  • Question 9
    1 / -0
    Corpora striata is found in
    Solution
    Corpora striata is a mass of grey matter beneath the cortex and in front of the thalamus in the cavity of the cerebral hemisphere, known as second ventricle or paracoel or lateral ventricle.
    So, the correct answer is option A.
  • Question 10
    1 / -0
    In human, corpus callosum connects
    Solution
    The corpus callosum is a thick band of nerve fibres, that connects the two hemispheres of the brain. It is made up of white matter.  
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