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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 else can I help you with?
How do you manage to sleep with one eye open and one eye closed?
It is not possible for humans to sleep with one eye open and one eye closed simultaneously. The brain requires both eyes to be closed in order to enter the deep stages of sleep.
During what stage of sleep does sleep paralysis occur?
Sleep paralysis typically occurs during the stage of sleep known as REM (rapid eye movement) sleep.
What does it mean to get some shut eye?
To get some shut eye means to get some sleep. It's a colloquial expression used to refer to taking a nap or getting some rest.
What causes Rapid Eye Movement?
Rapid eye movement is common during sleep but when it happens when a person is awake, it is considered to be abnormal and is called nystagmus. It is often caused by the abnormal function in part of the brain or the inner ear.
Why can I only open one eye in the morning?
Opening only one eye in the morning may be due to the natural process of sleep inertia, where one eye may open faster than the other as the brain transitions from sleep to wakefulness. This is a common occurrence and typically resolves as the body fully wakes up.
What does sandman mean?
Sandman is the name given to a fictious entity who has the power to put one to sleep. "Mr. Sandman, give me your dreams." He places sand in your eyes and you fall to sleep. When you wake, the sand in the corner of your eye is the result of his putting you to sleep.
What dugongs sleep on?
I think they sleep on the sand under water.
What protects a camels eye from sand?
they have eye lashes and that protects the eye
How do janitor fish sleep?
Sometimes they sleep in the glass of a aqaruim and in the ocean they sleep in the sand.
Where do starfish sleep?
They sleep hidden beneath sand, keeping quiet.
What is non-rapid eye movement sleep?
Non-rapid eye movement (NREM) sleep-- A type of sleep that differs from rapid eye movement (REM) sleep. The four stages of NREM sleep account for 75-80% of total sleeping time.
Can a person sleep with eye open?
NO their eye will dry out!
What are characteristics of REM sleep?
You have the alternate episodes of REM and NREM types of sleep. REM sleep is characterized by rapid eye moment type of sleep. You can easily spot that the person is moving his eye ball and flickers the eye lids. The electroencephalogram of the patient is specific for REM and NREM sleep.
Is REM sleep a quiet or active sleep?
REM (Rapid Eye Movement) sleep is active sleep.
How do you manage to sleep with one eye open and one eye closed?
It is not possible for humans to sleep with one eye open and one eye closed simultaneously. The brain requires both eyes to be closed in order to enter the deep stages of sleep.
Why do camel have thick eye brows?
to keep out sand during sand storms :)
Do sand tiger sharks sleep?
no they r like all sharks if they sleep they die
