Question

Corpora quadrigemina in humans is concerned with

• A. vision only
• B. hearing only
• C. both vision and hearing
• D. neither vision nor hearing

Answer 1

The correct option is C both vision and hearing

Corpora quadrigemina refers to the optic lobes found in animals.
In non mammals, they are 2 in number (corpora bigemina) called superior corpora or superior colliculi. They are hollow with an optocoel. They are concerned with vision only and control reflexes from iris and eyelids.
In mammals, they are 4 in number (corpora quadrigemina) called inferior corpora or inferior colliculi. They are solid without an optocoel. They are concerned with both vision and hearing. They control reflexes from the cavity of the middle ear.