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Earn 100

In our body, the largest number of neuron cells can be found in ___.
(a)Eye
(b)Tongue
(c)Brain
(d)Spinal cord

52.38% studentsanswered this correctly

Important Questions on Neural Control and Coordination
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Observe the following diagram of brain of man and identify the parts labelled as I and III.

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Match the following ?
Column I | Column II | ||
(i) | Satellite cells | (a) | form myelin sheath |
(ii) | Microglial cells | (b) | providing blood-brain barrier |
(iii) | Ependymal cells | (c) | surrounds the cell bodies in ganglia |
(iv) | Oligodendrocytes | (d) | movements in cerebrospinal fluid |
(v) | Astrocytes | (e) | Phagocytic cells |

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Identify the components of neuromotor system in sequence?
(i) Kineto desmata
(ii) Kinety
(iii) Kinetosome
(iv) Infraciliary system
(v) Kineto desmal fibrils
(vi) Motorium

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Assertion (A): Mammals have a relatively large brain when compared to that of other animals in relation to body size.
Reason (R): The number of optic lobes is four in mammals and two in other vertebrates.

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Which of the following is mismatched?

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The primary visual centre/cortex is located in _______

MEDIUM
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Identify and in the following graph regarding nerve impulse transmission.

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Assertion (): In myelinated nerve fibres, action potentials are conducted at a faster rate.
Reason (): The myelin present between nodes of Ranvier has concentrated and voltage-gated channels.
