( ( Centers ( in ( the brain ) ) ) ( ( ( stem ( ( and just ) ( above it ) ) ) ( where ( it ( joins ( ( the forebrain ) ( are ( ( the ( ( most primitive ) parts ) ) ( of ( ( the brain ) ( which ( control ( ( ( ( the ( critical functions ) ) ( such ( as ( breathing ( and ( temperature regulation ) ) ) ) ) ) ( as ( well as ) ) ) ( basic ( emotional responses ) ) ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (NNPS Centers)) (PP (IN in) (NP (DT the) (NN brain)))) (VP (VBP stem) (NP (NP (QP (CC and) (RB just))) (PP (IN above) (NP (PRP it)))) (SBAR (WHADVP (WRB where)) (S (NP (PRP it)) (VP (VBZ joins) (SBAR (S (NP (DT the) (NN forebrain)) (VP (VBP are) (NP (NP (DT the) (ADJP (RBS most) (JJ primitive)) (NNS parts)) (PP (IN of) (NP (NP (DT the) (NN brain)) (SBAR (WHNP (WDT which)) (S (VP (VBP control) (NP (NP (NP (DT the) (JJ critical) (NNS functions)) (PP (JJ such) (IN as) (NP (NN breathing) (CC and) (NN temperature) (NN regulation)))) (CONJP (RB as) (RB well) (IN as)) (NP (JJ basic) (JJ emotional) (NNS responses)))))))))))))))) (. .)))
Centers in the brain stem and just above it where it joins the forebrain are the most primitive parts of the brain which control the critical functions such as breathing and temperature regulation as well as basic emotional responses.
(ROOT (S (ADVP (RB Not) (RB surprisingly)) (, ,) (NP (JJ controlling) (NN flight)) (VP (VBZ is) (NP (NP (DT the) (NN function)) (PP (IN of) (NP (NP (DT the) (ADJP (RBS most) (JJ developed)) (NN part)) (PP (IN of) (NP (NP (DT a) (NN bird) (POS 's)) (NN brain))))))) (. .)))