Hair what is it made of?

Question

what is it made of?

Answer 1

Hair is a protein, as the first answerer said "keratin" that is the case.

All protein is made up of amino acids, which can bond with each other even when they are in a chain (hair). That's why some hair gets curly, because the amino acids can bond together and cause the whole chain to curl.

amino acids are simply the building blocks of life, plant leaves are made of proteins (which are made of amino acids)

Answer 2

A: The best way to answer this question is to reverse the two parts. First, your hair grows from follicles within the skin. The part of the hair inside the follicle (below the skin's surface) is known as the hair root, while the portion you see protruding from the head is the hair shaft. At the base of the hair root is the hair bulb where nutrients are received and new cells are formed.



        Also within the hair follicle are the dermal papilla (a cone shaped protrustion at the base of the follicle which feeds blood - and therefore nutrients - to the hair bulb), the sebaceous gland (or oil gland) which lubricates and keeps the hair healthy and shiny, as well as the arrector pili, a tiny muscle anchored to the follicle. The arrector pili respond to stimulus (fear or cold) causing them to contract and make the hair stand up straight.



        Taking nutrients from the dermal papilla, the hair bulb generates new hair cells. As these cells move up through the hair root, they mature through a process called keratinization, fill with fibrous protein and lose their nucleus. When the cell loses its nucleus it is no longer alive. By the time the hair emerges from the skin it is merely fiber made of keratinized proteins.



         The fibrous protein emerging from the hair follicle as the hair shaft has a specific construction. It forms a strand with three layers: an outer covering of overlapping keratin scales called the cuticle, a

middle layer of keratinized

protein fibers called the cortex, and, usually, a central 'core' of round cells called the medulla. A medulla is almost always found in coarse hair, and often is absent from naturally blonde hair and very fine hair.



        In fact, your hair is approximately 91 percent protein, and is made up of long chains of amino acids. These chains are found within the fibers of the cortex of the hair. The amino acids of these chains are made up of the elements carbon, oxygen, hydrogen, nitrogen, and sulfur (are also the building blocks of the skin and nails) and are joined together by peptide bonds. Long chains of these peptide bonds are called polypeptide chains.



        The polypeptide chains are in turn joined by side bonds. There are three types of side bonds: salt bonds, hydrogen bonds, and disulfide bonds. The salt and hydrogen bonds are most prevalent, but are weaker and are broken by heat and moisture. It is the action of salt and hydrogen bonds that allow the use of wet roller sets and curling or flat irons to change the amount of curl in the hair. Disulfide bonds are fewer, but are much stronger. When you get a permanent wave service, or a relaxer, it is the disulfide bonds that are broken and reformed to give you the change in the amount of curl. Each type of side bond accounts for about one-third of the hair's strength.

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Answer 3

Keratin (protein)

Answer 4

the same things as your nails i believe

anamil

Answer 5

Hair is made from a kind of protein called keratinized protein.  Keratinized refers to being "horny" or "feathery".  

The cells of your skin are organized (called follicles) and some produce liquid hair.  As the molecules come out of an opening the skin the proteins harden.  Depending on the shape of the opening in the skin, the hair comes out in different fashions.  If the hole is round, the proteins come out evenly and the hair is straight.  If the hole is oval, the hair is wavy.  If the oval is more flat on one side, then the hair curls.  

Some hair cells continue to produce the proteins for long periods of time.  Thus, the hair can become long.  Other hair cells produce hair for only short times and the hair does not grow long.  

Finger nails are made out of keratinized protein that is packed very close together.  If you look at your finger (or toe) nails across the nail, you'll see the lines that are really packed together hairs.