( Proprioceptors ( ( ( ( ( ( respond ( to ( internal stimuli ) ) ) and ) ( occur ( in ( ( ( ( ( ( ( ( skeletal muscles ) , ) tendons ) , ) joints ) , ) and ) ligaments ) ) ) ) and ) ( connective ( ( tissue coverings ) ( of ( ( bones and ) muscles ) ) ) ) ) . ) )
(ROOT (S (NP (NNS Proprioceptors)) (VP (VP (VB respond) (PP (TO to) (NP (JJ internal) (NNS stimuli)))) (CC and) (VP (VB occur) (PP (IN in) (NP (NP (JJ skeletal) (NNS muscles)) (, ,) (NP (NNS tendons)) (, ,) (NP (NNS joints)) (, ,) (CC and) (NP (NNS ligaments))))) (CC and) (VP (VB connective) (NP (NP (NN tissue) (NNS coverings)) (PP (IN of) (NP (NNS bones) (CC and) (NNS muscles)))))) (. .)))
Proprioceptors respond to internal stimuli and occur in skeletal muscles, tendons, joints, and ligaments and connective tissue coverings of bones and muscles.
(ROOT (S (NP (PRP You)) (VP (VBP call) (NP (NP (DT the) (NN part)) (PP (IN of) (NP (NP (DT the) (JJ skeletal) (NN system)) (SBAR (WHNP (WDT that)) (S (VP (VBZ connects) (NP (NNS bones) (NNS joints))))))))) (. .)))