Melanin

Topics: Melanin, Human skin color, Ultraviolet Pages: 6 (1489 words) Published: May 7, 2014
Biological make-up of Melanin
The three types of Melanin

What’s the science behind Melanin?

Advantages of Melanin
What’s the Pineal Gland?

Melatonin functions

Melanin in Plant’s & Animals

Effects of people with Low Melanin
The dangers of Low melanin
1. Ultraviolet (UV) rays
Manipulated Melanin
What is Keratinocytes?
Medicines that reduce Melanin
Name of Drugs

The Effects of the Drug

Biological Make-up of Melanin
Recently scientist have discovered that melanin is a refined, complex, multifunctional chemical that has a wide variety of important functions. The areas where the melanin is located are {Central nervous system, Autonomic (Automatic) nervous system, Peripheral Outlying surface, Diffuse Neuroendocrine(Glands) system, and Viscera’s (Major Internal Organs)}. The reason why the melanin in our skin is Black is due to the chemical structure not allowing any type of energy to escape once that energy has come into contact with its structure. When these steps are completed no energy is reflected away from the surface of the melanin structure. The human eye sees the color of an object as light reflects from the surface of that object. If no light or energy is reflected then that object will appear to the eye’s Black. (The ectoderm/ outer layer of the skin is where melanin is produced in the pre-fetus. Melanin a dark biological pigment found in skin. There are three types of Melanin: Eumelanin, Pheomelanin, and Neuromelanin. The most common form of melanin is eumelanin is the most abundant type of human melanin mostly found in people with brown or black skin. Pheomelanin can be found in light a dark-skinned people, but females tend to have more of this type of pigments in their skin than men. You will often notice a pinker or reddish quality to a woman’s body and pheomelanin is more concentrated on the lips, nipples and vagina. Neuromelanin is the modified form of melanin pigment normally found in certain neurons of the nervous system. Neuromelanin color’s certain distinctive regions of the brain. Melanin reduces ultraviolet (UV) induced DNA damage by absorbing or scattering the ultraviolet radiation that otherwise would have been absorbed by the DNA. This prevents the development of melanoma, a potentially deadly form of skin cancer, melanoma is the most dangerous type of skin cancer. It is the leading cause of death from skin disease, these cancerous growths develop when unrepaired DNA damage to skin cells most often caused by UV radiation from sunshine or tanning beds and more than 8,790 people die annually from melanoma.

Pineal Gland
Melanin is key component to human’s development but the key component to the development of melanin is the pineal gland. The Pineal gland is located behind the third cerebral of the brain. Pineal gland is a small organ shaped like a pine cone. The pineal varies in size among species; in humans it is roughly 1cm in length. The gland is relatively large in children and begins to shrink during puberty. The production of melatonin by the pineal gland is stimulated by darkness and inhibited by light. Photosensitive cells in the retina detect light and directly signal the SCN (Suprachiasmatic Nucleus). The abundant melatonin levels in children are believed to inhibit sexual development and pineal tumors have been linked with precocious puberty, when puberty arrives melatonin production is reduced. One of the biggest roles of the pineal gland is producing hormones that have important endocrine functions. The endocrine system includes all of the glands of the body and the hormones produced by glands. The two primary hormones the gland makes are melatonin and amino acid thyptopan melanin plus on important role in the regulation of sleep cycles. It’s influenced by the dictation of light and dark by the retina of eyes. The production of melatonin is inhibited when the retina detects light and is stimulated in the absence of light. Animal and Plant life also produces...
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