( ( The ( class focus ) ) ( ( ( ( is ( on physiology ) ) , ) ( including ( ( ( ( ( ( ( the ( nervous system ) ) , ) ( circulatory system ) ) , ) neurotransmitters ) and ) hormones ) ) ) . ) )
(ROOT (S (NP (DT The) (NN class) (NN focus)) (VP (VBZ is) (PP (IN on) (NP (NN physiology))) (, ,) (PP (VBG including) (NP (NP (DT the) (JJ nervous) (NN system)) (, ,) (NP (JJ circulatory) (NN system)) (, ,) (NP (NNS neurotransmitters)) (CC and) (NP (NNS hormones))))) (. .)))
The class focus is on physiology, including the nervous system, circulatory system, neurotransmitters and hormones.
(ROOT (S (NP (NNS Hormones)) (ADVP (RB generally)) (VP (VBP travel) (PP (IN through) (NP (NP (DT the) (JJ circulatory) (NN system) (NN system)) (PP (IN of) (NP (DT the) (NN body)))))) (. .)))