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Humans have a structure in their heads called the pineal body or gland. It isn't an eye, and in humans it's really not even vaguely eye-like other than being sort of approximately round.
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Influences body rhythms and interacts with the biological clock?
Pineal body (gland)
What is the color spectrum humans cannot see?
black because as it absourbs light true black is invisable to the human eye.
What is the difference between the celestial equator and the horizon?
The celestial equator ties our planet to constellations. Humans perceive the horizon from the ground, so it appears curved to our naked eye.
Why does the wavelength response of the humans eye match so well with the visual window of Earth's atmosphere?
The human eye's sensitivity to wavelengths in the visual window of Earth's atmosphere is due to evolution adaptations during the development of the human eye. If infrared radiation were in abundance, then it is believed our eyes would be sensitive to infrared radiation.
What is the difference between a squid eye and a human eye?
the squid eye is more bigger then the human eye.
Does a cat have a pineal gland?
Yes. The pineal gland produces melatonin. The pineal gland is also known as a "third eye" for intuition.
Do animals have pineal glands?
Yes, many animals along with humans have the pineal gland.
What are some adaptations of agnathans?
parasitism, pineal (sp?)(third eye).
Is the pineal gland the lightest organ on the body?
If based on the premise that the pineal gland is the smallest organ in the body, then it could be argued that yes, the pineal gland is also the lightest organ in the body. It also called the pineal body, or "third eye" and is located between the two hemispheres of the brain.
Is there any organism that has more than one eye type?
Yes. Certain lizards retain a pineal eye, which is quite different from their standard matching pair.
Does the tuatara's third eye have a use and does it absorb sun to put itself to sleep?
The tuatara is not the only reptile with a so-called pineal eye; most reptiles have one, and amphibians and fish do too. Light falls through and stimulates a part of the brain, making the animal active. If you cover the pineal eye, the animal will relax as if falling asleep. Mammals don´t have a pineal eye because part of our brain grew over the part stimulated by light. Instead, light comes through our eyes to stimulate it. That´s why we feel sleepy as soon as we close our eyes!
Animal three eyes?
Surprisingly, there is. This is the tuatara, a reptile which looks like a lizard. In some lizards there is a gland at the front of the brain called a pineal body, shapes like an eye. In most of these lizards, the pineal body is not fully developed, and does nothing at all, but in the tuatara's case, it is developed fully, and acts as a third eye.
What is animal name that has 3 eyes?
The tuatara, a lizard-like reptile that lives only in New Zealand, has those three "eyes." It belongs to a group of reptiles that once included many other creatures, but today, the tuatara is the only surviving member of that group. To understand where the tuatara's "third" eye came from, scientists studied a small growth attached to the front of the reptile's brain, a gland my called the pineal body. In some lizards, the part of the brain that is related to this pineal body is shaped much like an eye. It has a lens-shaped outer wall, a transparent covering, and a retina with pigment. Scientists think that this "pineal eye" does not help most lizards see, but in the tuatara, the pineal eye is fully developed, giving the creature a "third eye" through which to see!
What is the disease of the pineal gland?
Pinealoma (pineal/o meaning pineal gland and -oma meaning tumor)PinelomaPinealomaA pinealoma can disrupt the production of melatonin.
What melatonin-producing part of the brain considered by the ancients to be home to the third eye was identified by Descartes as home to the soul?
Pineal gland
Define pineal gland?
"any" disorder of the pineal gland is pinealopathy.
What is the most common eye sight for humans?
the comon eye sight for humans is the pupil
