What is an example of how structure dictates function on a cellular tissue and organ level level?

An example of how structure dictates function can be seen in the alveoli of the lungs. These tiny, balloon-like structures have thin walls and a large surface area, which facilitates efficient gas exchange between the air and blood. Their clustered arrangement maximizes contact with capillaries, allowing for optimal oxygen uptake and carbon dioxide removal, illustrating how their unique structure directly supports their primary function in respiration.