Question

A patient is experiencing frequent dizziness. Which of the following is LEAST likely to be responsible?

Group of answer choices

a-damage to semicircular canals

b-damage to CN I

c-damage to cerebellum

d-damage to CN VIII

Answer 1

Answer

Option B) Damage to CN I

• Cranial nerve I is olfactory nerve. It carries impulses of sense of taste from taste buds in the tongue.
• Dizziness occurs as a result of damage in structures involved with body balance.
• Crebellum controls coordination of movements, CN VIII is vestibulocochlear nerve that carries impulse for balance and hearing and semicircular canals are responsible for balance of rotational movements.
• Hence, damage to these structures may lead to vertigo or dizziness.