NEET Biology question
Following are some nerves. Categorise them as afferent, efferent and mixed nerves according to their nature and then choose the correct option from the codes given below I. Trigeminal nerves II. Occulomotor nerves III. Olfactory nerves IV. Auditory cranial nerves V. Hypoglossal cranial nerves VI. Spinal accessory cranial nerves VII. Optic nerves VIII. Abducens nerves IX. Pathetic nerves X. Glossopharyngeal cranial nerves XI. Vagus cranial nerves XII. Spinal nerves XIII. Facial cranial nerves Codes
Afferent nerves | Efferent nerves | Mixed nerves (a) III, VII, IV | II, IX, VIII, VI, V | I, XIII, X, XI, XII (b) I, XIII, X, XI, XII | III, VII, IV | II, IX, VIII, VI, V (c) II, IX, VIII, VI, V | I, XIII, X, XI, XII | III, VII, IV (d) III, VII, VIII | XIII, XI, V, VI | I, II, IV, IX, X, XII
Solution
The purely sensory (afferent) cranial nerves are olfactory, optic and auditory (III, VII, IV); the purely motor (efferent) ones are oculomotor, pathetic/trochlear, abducens, spinal accessory
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