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The plica semilunaris is the vestigial remains of the nictitating membrane (or 'third eyelid') found in many fish, birds, and a few mammals. The plica semilunaris and its connected muscles serve no current function, but certainly did in human ancestral species, protecting the eye from foreign contaminants.
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Is plica semilunaris vestigial organ of human?
yes boss it is :)
How does sand get in your eye when you sleep?
The plica (PLY-ka) semilunaris (sem-ee-LOO-ner-is), which is located around the eye was thought to have no function. But eventually it was discovered that this "useless" organ has an important function after all. In fact, it is the "crusty" factory. It secretes a sticky mass that collects any foreign materials such as dust or pollen. All this trash is surrounded by the sticky gook so that it does not scratch the sensitive cornea in your eye. Once the garbage is collected, the plica semilunaris "escorts" it out of the eye just like a security guard would escort noisy troublemakers out of a theater.
What is the common name for the nictitiating membrane?
It is often called a third eyelid or haw (and may be referred to as the plica semilunaris or palpebra tertiain scientific terminology).
When was Julian Plica born?
Julian Plica was born in 1978, in Munich, Bavaria, Germany.
How does a tropidurus plica eat its food?
A tropidurus plica eats its food through the same hole it excretes out of.[BUTT MUNCHER]
When was Adalbert Plica born?
Adalbert Plica was born on November 6, 1937, in Stettin, Pomerania, Germany [now Szczecin, Zachodniopomorskie, Poland].
What is the function of the cornae eye?
the front part of the eye
What is the function of eye sockets?
it surrounds you eye muscles
What is the function of the eye spot in plant like protists?
The eye spot in plant like protists function as a sensory structure.
What is the function of a fish eye?
They Can see who's their enemiesHope This Help
What is a visualization of the angle of the anterior chamber of the eye?
the function of the eye is the ultrasound
What is the function of eye lids?
to moisten the eye and to keep dirt and other harmful materials to the eye out
