In <01bc7346$ec6b6f20$bcd092cf at default> "RANDY MORTELL" <R.C.M. at worldnet.att.net> writes:
>I was having a discussion with a couple of friends and we disagreed on the
> 1). The brain originates / controls sexual urges.
>> 2). The brain originates / controls all body functions (voluntary and
>involantary functions) ie.. twitches etc....
> I really appreciate any input from everyone out there, particulary those
>with a medical backround.
>r.c.m. at worldnet.att.net
Well, I don't know about sexial urges. Suspect there is some role for the brain
- regulation of hormones etc, but someone else will know better. Regarding
question 2, the brain does NOT control all body functions. There are many
neural reflexes which occur at a spinal level - eg the knee jerk reflex. These
reflexex can be shown to still be present in animal with the spinal cord
sectioned. Also, twitches can occur in muscles spontaneously, I believe by
the release of neurotransmitter form the motorneurons without any central