@spikepipsqueak,
To my knowledge, emotions are by nature non-local; they involve networks of neurons that reach out to the entirety of the brain and modulate how other signals are processed. That's not to say that one gland or another are not involved in a process that goes way beyond them.
Likewise, people's language ability can be impaired by damages to more than one brain area, suggesting that not just one part of the brain is involved. Rather, a network is at play.
Of course our brain can have specialized regions but they work as part of a broader network and can generally be replaced by other brain areas once they get damaged, or reallocated to other tasks when needed.
Not unlike the circuits of a computer chip, BTW. There's NOT a region of the chip that specialize in mathematics, another one in word processing, and a third one in surfing the Internet.