Whereas quick responses are brought about by the nervous system, most of the long-term control of the body is carried out by the endocrine system.
(quick responses; are brought about; by the nervous system) (most of the long-term control of the body; is carried out; by the endocrine system)
quick responses most of the long-term control of the body
are brought about is carried out
by the nervous system
by the endocrine system