Multiple Choice Questions

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Which of the following nerve is purely motor nerve?

  • vagus

  • facial

  • abducens

  • trigeminal


C.

abducens

Abducens is an example of a pure motor nerve. It arises from the anterior end of medulla oblongata in the vertebrate brain to supply the posterior rectus muscle of each eye ball.


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Ivan Pavlov performed experiments on

  • origin of life

  • cardiac reflexes

  • simple reflexes

  • conditioned reflexes


From acrosome, which secretes

  • hyaluronic acid

  • hyaluronidase

  • TSH

  • fertilizin


In motor neuron the impulse following in which direction?

  • In two direction

  • In one drection

  • In all direction

  • None of the above


Which of the following is not a mental disorder?

  • Epilepsy

  • Neurosis

  • Psychosis

  • Plague


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Proximal and distal convoluted tubules are parts of a

  • nephron

  • oviduct

  • vas deferens

  • caecum


Cranial nerve showing maximum branching is

  • trigeminal

  • vagus

  • optic

  • facial


In human eyes, colour perception is done by

  • rod cells only

  • cone cells only

  • Both (a) and (b)

  • choroid laver cells


During the conduction of nerve impulse, the action potential is the result of movement of

  • Na+ from intracellular fluid to extracellular fluid

  • Na+ from extracellular fluid to intracellular fluid

  • Na+ towards both directions

  • None of the above


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Which are the longest cells in the body of man ?

  • Muscle cells of legs

  • Bone cells

  • Nerve cells

  • None of the above


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