Affection of the cerebellar may produce any of the following EXCEPT:

Correct Answer: D

Rationale: Positive Rinner & Weber test is the correct answer because these tests are used to assess hearing and are not related to cerebellar function. The cerebellum is involved in coordination and balance, so tests like Romberg's, finger-to-nose, and heel-to-knee are used to evaluate cerebellar integrity, while Rinner and Weber tests are auditory assessments.

Correct Answer: A

Rationale: Bulbar palsy is the correct answer because it results from damage to the lower motor neurons of the cranial nerves IX, X, and XII, which are located in the medulla oblongata. This condition leads to dysphagia, dysphonia, dysarthria, and tongue atrophy due to the loss of motor control in the muscles of the pharynx, larynx, and tongue.

Correct Answer: D

Rationale: Intracranial pressure (ICP) can be reduced by intravenous mannitol (an osmotic diuretic), placing the patient in a head-up position (to improve venous drainage), and hyperventilation (which reduces CO2 levels and causes cerebral vasoconstriction). All these methods are clinically used to manage elevated ICP.

Correct Answer: D

Rationale: Pupil size is largest in adolescence and decreases with age. Physiological anisocoria (unequal pupil size) is present in about 20% of the population. The latent period for the pupillary light reflex is typically 0.2 to 0.5 seconds.

Correct Answer: D

Rationale: Area V8, also known as the colour centre, is specifically involved in colour vision. V1, V2, and V3 are involved in early visual processing but not exclusively in colour vision.