Visceral nervous system comprises of:

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Important Questions on Neural Control and Coordination

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IMPORTANT

MTG OBJECTIVE NCERT AT YOUR FINGERTIPS BIOLOGY CLASS XI + XII>Chapter 21 - Neural Control and Coordination>MCQS CORNER>Q 26

The given figure shows the structure of a neuron. Select the option that correctly identifies the parts labelled as A to E.
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MTG OBJECTIVE NCERT AT YOUR FINGERTIPS BIOLOGY CLASS XI + XII>Chapter 21 - Neural Control and Coordination>MCQS CORNER>Q 27

Myelin sheath is formed by

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MTG OBJECTIVE NCERT AT YOUR FINGERTIPS BIOLOGY CLASS XI + XII>Chapter 21 - Neural Control and Coordination>MCQS CORNER>Q 28

In a medullated nerve fibre, the conduction of impulse is faster due to the presence of

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MTG OBJECTIVE NCERT AT YOUR FINGERTIPS BIOLOGY CLASS XI + XII>Chapter 21 - Neural Control and Coordination>MCQS CORNER>Q 29

Read the given paragraph.
In the resting state, the axonal membrane is (i) with more (ii) charged ions outside than inside. This unequal distribution of ions is due to (1) the selective permeability of the membrane, which forms an almost impenetrable barrier to (iii) and (2) the action of the (iv), which pumps (v)

N a^{+}

out of the neuron for every (vi)

K^{+}

brought in.
Select the option that correctly fills the blanks in the paragraph.

	(i)	(ii)	(iii)	(iv)	(v)	(vi)
$(a)$	depolarized	positively	$N a^{+}$	sodium- potassium pump	three	two
$(b)$	depolarized	negatively	$N a^{+}$	sodium-potassium pump	three	two
$(c)$	polarised	negatively	$N a^{+}$	sodium- potassium pump	three	two
$(d)$	polarised	positively	$N a^{+}$	sodium- potassium pump	three	two