Assertion: smooth muscle cell | /r/HasProperty | responsible for involuntary contraction
Facets:
value: mainly
type: OTHER
Source sentences:
text: They are often spatially organized in both longitudinal and circumferential architectures around the outer layers of these visceral organs, and they are mainly responsible for the involuntary contraction (constriction/closing) and relaxation (dilation/opening) of these organs [ 2 – 4 ].