1-What are the differences in the quantities of pigments in red hair versus blon
ID: 89399 • Letter: 1
Question
1-What are the differences in the quantities of pigments in red hair versus blonde and brunette? What causes some hair to be kinky, or wavy? Why is gray hair white in color?
2-What are the most typical type of sweat glands? Where do their ducts open up into? What is the function of apocrine glands? Where are they located. Where do their ducts open?
3-What is the name of the glands that produce your natural skin moisturizer? Are eccrine glands found in the palms of your hands? Do your hands get oily from sebum? Why or why not?
4-Hair and nails emerge from hair and nail roots. Both hair roots and nail roots contain what type of cells? Do hair and nails desquamate?
Explanation / Answer
1. The differences in the quantities of pigments in red hair versus blonde and brunette
Red hair
Blonde
Brunette
Low concentrations of eumelanin, this is mainly because it appears to be associated with the melanocortin-1 receptor, from chromosome 16.
fair hair a result of low concentrations of brown eumelanin
brown or black hair, in the person's hair follicles have high levels of eumelanin and lower levels of pheomelanin
2. Hair to be kinky, or wavy determines by differences in the keratin proteins that make up hair. Box is having the causes put in it.
Kinky hair
hair curliness are caused by differences in the keratin proteins, amino acid cysteine has a sulfur which connects to another sulfur atom in a disulphide bond,
Straight hair
In this case we have the hairs to be sharply and firmly attached to the scalp and they are not disturbed by the lot of disulphhide bonds, so they have the straight hairs.
asymmetrical distribution of disulphide bonds in hair cause curling, disulphide bond bind the keratin proteins more tightly causes curling types
Here the texture is fine from the molecular level,
Hair naturally and generally contains melanin that is integrated into the hair making up protein keratin. Melanocytes continue to inject pigment into the hair's keratin, when age affects the health or even sometime some other factor, the hair loses the melanin in it. Instead of melanin it then contains just the air bubbles, so the hair turns to white.
2. Sweat glands are a type of exocrine gland, also known as sudoriparous glands. Mainly they are of two types, Eccrine sweat glands and Apocrine sweat glands. Former one is the most abundant one found in the whole body while later type is limited to armpit and perianal part of human body.
Their ducts open up into two or more layers of cuboidal cells in case of eccrine glands, while the apocrine glands are opening into double layer of cuboidal cells.
Apocrine sweat glands are sole effective sweat glands for various animals like horses, donkeys, camels etc, because in humans they are not significant for cooling.
Eccrine sweat glands ducts opens to skin surface, while the other one is hair follicle, sometimes nearby skin surface. Secretion aids in preserving the skin's acid mantle, helps in thermoregulation.
Red hair
Blonde
Brunette
Low concentrations of eumelanin, this is mainly because it appears to be associated with the melanocortin-1 receptor, from chromosome 16.
fair hair a result of low concentrations of brown eumelanin
brown or black hair, in the person's hair follicles have high levels of eumelanin and lower levels of pheomelanin
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