More than spoken languages, sign languages can convey meaning by simultaneous means, e.g. by the use of space, two manual articulators, and the signer's face and body. Source: Internet
Passive articulators remain static during the articulation of sound. Source: Internet
Rachael-Anne Knight(2012), Phonetics- A course book, Cambridge University Press, p.27 Upper lips, teeth, alveolar ridge, hard palate, soft palate, uvula, and pharynx wall are passive articulators. Source: Internet
Speech organs or articulators are of two types: passive articulators and active articulators. Source: Internet
Table of gestures and passive articulators and resulting places of articulation The following table shows the possible combinations of active and passive articulators. Source: Internet
The use of two manual articulators is subject to motor constraints, resulting in a large extent of symmetry Battison, Robbin (1978). Source: Internet