However, the red-yellow pheomelanin is believed to cause the warm, golden, or auburn tones found in some types of brown hair. The range of colors produced by melanins is limited to shades of yellow, brown, red, and black. Grey hairs contain only a few melanin granules, spread out through the hair.
Hormones are your body's chemical messengers. They travel in your bloodstream to tissues or organs. Endocrine glands, which are special groups of cells, make hormones. The major endocrine glands are the pituitary, pineal, thymus, thyroid, adrenal glands, and pancreas. In addition, men produce hormones in their testes and women produce them in their ovaries.
How Endocrine System Affects Other Body Systems ? The endocrine system affects most functions in the body especially growth and regeneration. The responsible hormone is the growth hormone (GH) or the somatotropin released by the anterior pituitary lobe. The hormones secreted by these glands order the body organs and systems to function in a specific way. More..