Elastin is a flexible, rubbery protein that is found throughout the body, but it is particularly abundant in areas where tissue elasticity is crucial. As a field expert in biomedical science, I can provide you with a detailed explanation of where elastin is located in the human body.

Elastin is found in:

1. Lungs: It provides the necessary elasticity for the lungs to expand and contract during breathing.

2. Skin: Elastin helps the skin to return to its original shape after being stretched, maintaining its youthful appearance.

3. Arteries: This protein is a key component of arterial walls, allowing them to expand and contract with the pulsing of blood flow.

4. Ligaments: Elastin contributes to the flexibility and resilience of ligaments, which connect bones to each other at joints.

5. Tendons: It is also present in tendons, which attach muscles to bones, aiding in their ability to stretch and recoil.

6. Valves: In the heart and other parts of the body, elastin is found in valves, helping them to open and close properly.

Elastin is a critical component of the extracellular matrix and plays a vital role in maintaining the structural integrity and function of tissues that undergo repeated stretching and deformation.

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The protein elastin is found in connective tissues throughout the body. It is notably found in the extracellular matrix of the skin as well as the internal organs of the body. You may have noticed that the name elastin sounds much like 'elastic.'read more >>