In individuals who do NOT have neurological disease, intellectual performance tends to be maintained until at least age ________.

H e l uid that surrounds the brain is called:

A. aqueous humour l uid. B. hemoplasmatic l uid. C. synovial l uid. D. cerebrospinal l uid.

The hair cells are invested with ____________________ that protrude through the cuticular plate

Fill in the blank(s) with correct word