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111. Are rods and cones evenly distributed over the entire surface of the retina? At which point on the retina is no image formed ?

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112. Which nerve tract connects the right and left hemispheres of cerebrum ? Into what four lobes is each hemisphere divided ?

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113. Chemical synapse is more advantageous than electrical synapse. Discuss.

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114. Explain resting membrane potential.

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115. Differentiate between sympathetic and parasympathetic nervous system.

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116. Differentiate between the Conditioned reflex and unconditioned reflex.

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117. Differentiate between Preganglionic and postganglionic nerve fibres.

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Adrenergic nerve fibres

Cholinergic nerve fibres

1. The nerve fibres release noradrenalin at their ends.

2. These are mostly sympathetic nerve fibres.

1. These nerve fibres release acetycholine at their ends.

2. These are mostly parasympathetic nerve fibres.

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119. Briefly describe the structure of the following

(a) Brain.

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120. Briefly describe the structure of the following
(b) Eye.

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