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dano7744 eNotes educator| Certified Educator

Collagen is a structural protein that helps form body structures. It is located in many areas of the body like the epidermis (outer most layer of skin), tendons, and ligaments. Collagen gives strength to body tissues. For example, the collagen in the skin helps maintain elasticity and form.

As we age, the tensile strength of collagen diminishes. This is one reason we get wrinkles of the skin. The cosmetic industry uses collagen as an additive in facial creams for this reason. The theory is that if you use collagen laden cream on the face, it will help firm the tissues and thus wrinkles will be less noticeable.

besure77 eNotes educator| Certified Educator

Collagen is a very fibrous protein. The purpose of collagen is to connect and support tissues in the body. It is very strong and is the main protein that is found in connective tissue. There are many different types of collagen in the human body and it is like the "glue that holds the body together." Approximately twenty-five percent of all the protein in the body is made up of collagen. When people begin to wrinkle as they age it is due to the fact that the collagen has started to degrade. Plastic surgeons use collagen injections to help people look younger.

kc4u | Student

Collagen is a group of naturally occurring fibrous proteins in animals, most abundantly in mammals, such as humans. Collagen functions as a glue that holds the body together by connecting and supporting such bodily tissues as the muscles, tendons, ligaments, cartilages, skin, bone and teeth. In the absence of Collagen, as if the body would fall apart. 25 types of Collagen make up 25-35% of the total amount of proteins in the human body. Collagen is the main protein of the connective tissue, and the main component of ligaments and tendons. It also contributes to the elasticity of the skin, and its degradation causes wrinkles and other signs of ageing on the skin.

giorgiana1976 | Student

The etymology of the word is greek, and translated means "producer of glue". This name has appeared because when boiling animal skin the collagen is isolated to produce the adhesive.

Collagen is a protein of connective tissue from human and animal body. Collagen has a flat character and it's obscure in the skin. When it occurs in tendons, it is in the form of  hard and heavy fibrous strings. Collagen has the role of supporting the body in many ways, from supporting the blood vessels to the support of the skin.

As we get older, our body tends to produce less quality colagen or weaker. Skin itself is actually collagen in 70%. When a small amount of collagen or of a inadequate quality is produced, the skin loses its elasticity.The age, and therefore the lack of collagen, is reducing the power to stretch of the tendons. The ability to move freely and comfortably is reduced because of that.

Sun's ultraviolet rays are one of the main enemies of collagen. Also, the residual sugar from digestion has an adverse effect on collagen from the skin.

sid-sarfraz | Student

Collagen is a fibrous connective tissue protein of which 25 types of them occur naturally, making 25% of total proteins in the body, acting as a glue that holds the body together.


  • Holds the body together
  • Connects and supports the body organs and various tissues
  • Maintains external and internal structure of cells
  • Gives the body firmness and strength
  • Important in the functions of kidney and various internal organs
  • Supports teeth


  • Collagen is used in cosmetic surgeries
  • Collagen supplements for joint mobility
  • Treats Major burns


Bones of our body are made up of 95% of collagen and minerals, which keeps our bones strong, stable, flexible and maintains their structure. 


Collagen acts as anti-oxidant for our skin. Collagen keeps our skin, healthy, smooth and full of life while slowing down the effects of aging. It is used in skin creams with a protein named keratin.


As muscles main function is movement where as collagen are natural found proteins, therefore the role of collagen in muscles is to provide energy, strength and structure required for moving throughout the day. 


Blood vessels main function is to supply blood and oxygen throughout the body to various organs and tissues of the body. Therefore the role of collagen is to make walls of arteries and capillaries while providing them with strength and flexibility, so that blood is transported throughout the day effectively.

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