Risorius
The risorius is a muscle of facial expression which arises in the fascia over the parotid gland and, passing horizontally forward, superficial to the platysma, inserts onto the skin at the angle of the mouth. It is a narrow bundle of fibers, broadest at its origin, but varies much in its size and form.
Action
The risorius retracts the angle of the mouth to produce a smile, albeit an insincere-looking one that does not involve the skin around the eyes. Compare with a real smile, which raises the lips with the action of zygomaticus major and zygomaticus minor muscles and causes "crow's feet" around the eyes using the orbicularis oculi muscles.
Innervation
Like all muscles of facial expression, the risorius is innervated by the facial nerve (CN VII). The specific branch is debated, with some sources giving Marginal mandibular branch of the facial nerve and others giving Buccal branch of the facial nerve.
Unique to Hominines
It has been suggested that the risorius is only found in Homininae (African great apes and humans).
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Rose Royce
by: Rose RoyceSittin here in this chair
Waitin on you
aaahhh baby to see things my way
But not a word do you say
You won't even look my way, yeah
Girl I'm spendin my dimes
Wastin my time
Talkin til I'm black and blue
Uh can't you see
I wanna get next to you
Dreams of you when I go sailing by
When ever your eyes meet mine
Your so fine
And girl you make me feel so insecure
You're so beautiful and pure
Why must you be unkind
And tell me I'm not your kind
Blowin my mind
Girl my, my money is low and I know
That I can't take you to the fancy places
You might wanna go
Still I wanna get next to you
I wanna get next to you
Baby yeah
aah aah aah aah aah
aaahh yeah
Girl you can bend me, shape me, make me
What ever it takes to please you
I'm willing to do
cause you're my dream come true
And I wanna get next to you
Baby yeah
I wanna get next to you
I wanna make you mine for all of time
(I wanna get next to you)
I promise I'll never make you blue
I wanna get next to you
So let love begin between me and you
(I wanna get next to you)
Girl I'm in love with you