Question

explain about corpora quadrigemina..??

Answer 1

In the brain, the corpora quadrigemina(Latin for "quadruplet bodies") are the four colliculi—two inferior, two superior—located on the tectum of the dorsal aspect of the midbrain. 

Answer 2

corpora quadrigemina is four lobed structure
2 of them are inferior coliculi and remaining 2 are superior coliculi
superior-visual in function
inferior-auditory in function

hope it helps you...