In one famous 1993 experiment, researchers asked human subjects to smile forcibly for 20 seconds while tensing facial muscles, notably the muscles around the eyes called the orbicularis
oculi (which create "crow's feet").
The temporal nerve provides motor innervation to the frontalis, corrugator, and lateral orbicularis
Among the tardive syndromes, tardive blepharospasm refers to a repetitive, persistent, and severe spasm of the orbicularis
oculi muscle as an isolated condition.
laevigata Penard, 1890 * Centropyxis orbicularis
Deflandre, 1929 * Centropyxis platystoma Penard, 1890 x x Cyclopyxis spp.
It was traditionally considered as being either anterior or posterior in terms of eyelid involvement, referring to inflammation either anterior or posterior to the grey line (marginal region of orbicularis
muscle demarcating anterior lamella--skin and orbicularis
from the posterior one--tarsus and conjunctiva).
Enzymehistochemical and morphological characteristics of muscle fibre types in the human buccinator and orbicularis
These researchers instructed their test subjects to view cartoons while holding a pen in their mouth in such a way that either the zygomaticus major muscle (which is used when laughing and smiling) or its antagonist, the orbicularis
oris muscle, was contracted.
We carry this incision down to the orbicularis
notatus (Houttuyn, 1782) (Kuwamura 1983), Sphaeramia orbicularis
(Cuvier 1828) (Allen 1975), Pterapogon kauclerni Koumans, 1933 (per.
Brazil (SP) Rhetus arcius Riodinini Struthanthus Costa Rica orbicularis
Rhetus periander Riodinini Loranthaceae Brazil (PR) Synargis sp.
Using the second part of the coil to form the upper part of the mouth, the orbicularis
oris, we get the 'Homer Simpson' look (Fig 3).
Antiinflammatory constituents of Celastrus orbicularis
inhibit the NF-kappaB activation and NO production.