The nerve impulses are sent out to the brain by the cochlear portion of the auditory nerve
Cobalt has the smallest daily requirement for humans.
noun
1.
used in reference to an activity, cause, etc. that is currently fashionable or popular and attracting increasing support.
"the environmental bandwagon is feeling mighty crowded"
2.
(especially formerly) a wagon used for carrying a band in a parade or procession.
"the colorful bandwagon was later purchased for use in circus parades"