Question

S.No.	Cranial nerves	Arises from ...	Ends in ...
I.	Olfactory nerves	Olfactory epithelium of nasal chambers	Temporal lobes of cerebrum
II.	Optic nerves	Retina of eyes	Cerebellum
III.	Auditory nerves	Internal ears	Cerebrum
IV.	Pathetic nerves	Floor of mid brain	Superior oblique muscle of eye ball

                                                                  Table 1: List of Cranial Nerves: Their Origins and End Points

• A. I, II
• B. II, III
• C. III, IV
• D. I, IV

Hint:

Optic nerves (CN II) transmit visual signals to the occipital lobe, not the cerebellum, while auditory nerves (CN VIII) connect to the temporal lobe for hearing processing.

Answer 1

The Correct Option is B

To identify the incorrect combinations, let’s evaluate each cranial nerve’s origin and termination using a table for clarity, comparing them with standard anatomical facts.
 

Nerve	Given Arises from	Given Ends in	Evaluation
I. Olfactory	Olfactory epithelium	Temporal lobes of cerebrum	Correct: Olfactory nerves (CN I) arise from the nasal epithelium and end in the olfactory cortex, located in the temporal lobes.
II. Optic	Retina of eyes	Cerebellum	Incorrect: Optic nerves (CN II) arise from the retina but end in the occipital lobe (visual cortex) via the thalamus, not the cerebellum.
III. Auditory	Internal ears	Cerebrum	Incorrect: Auditory nerves (CN VIII) arise from the inner ear but end in the brainstem and auditory cortex (temporal lobe), not the cerebrum broadly.
IV. Pathetic	Floor of mid brain	Superior oblique muscle	Correct: Pathetic nerve (CN IV, Trochlear) arises from the midbrain and innervates the superior oblique muscle of the eye.

From the evaluation, II and III are incorrect. Checking the options, II and III together match option (2).