The function of the Orbicularis Oculi is that it closes the eyelids.
circular muscle around the eye
To wink
The eyes' muscle group is the orbicularis oculi
One. The palpebral portion of the orbicularis oculi muscle involuntary closes the eyelids or palpebrae as in blinking. However, the orbital portion of the orbicularis oculi is subject to the will.
The orbicularis oris is the facial muscle responsible for puckering or pursing the lips.
The Orbicularis oris muscle. It is sometimes known as the kissing muscle because it is used to pucker the lips.
Stimulus is like the cause of something or the theme. The receptor is what you use fir the stimulus e.g you look at a tv guide ( stimulus) and the receptor is your eyes because you use them to see it. The effector is the muscle used To use the tv guide so this could be your hand
buccinator and orbicularis oris
You primarily use the buccinator and orbicularis oris muscles
This depends on which elements of a smile you are refering to. The act of raising the corners of your mouth is done by three muscles, primarily the zygomaticus major and risorius muscles and aided by the buccinator muscle. If you squint your eyes while you smile you may also use orbicularis oculi. If you scrunch your nose with your smile then you may also use your procerus and nasalis muscle. If your forehead wrinkles and eyebrows raise then your occipitofrontalis helps as well. For someone with a very expressive smile, they are likely using alot of their facial muscles (up to 15, the rest would oppose a smile and cause frowning).
He/she would use flexibility training to increase the flex a muscle can give. This would protect against cramps and strains in extreme position, because the muscle and ligaments would be use to the awkward and sometimes excessive strain.
so, a frog has 2 layers of skin and what do you use to separate the skin from the muscle?
under the control of human
corrugator supercilii