To understand the structural similarities, one has to understand the functional similarities. The most obvious similarity is that they are both involved with transport via diffusion. So the structural similarities would be those that facilitate this. eg. thin epithelium, large blood supply.
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similarities
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There are zero similarities between the two.
Villi are in the small intestine and alveoli are in the lungs. They both work by diffusion.
The microvilli and villi in the intestine increase the absorbent surface where nutrients are transported into the blood. The alveoli in the lungs and gill lamellae bring oxygen in the air and water to the bloodstream,
Wherever capillaries are found, these are places where nutrients and wastes are exchanged.
Villi are linked between the digestive systme and excretory system.
villi in the small intestine, alveoli in the lungs, folded inner membrane of the chloroplast and mitochondria, having numerous small cells instead of fewer large cells
the rugae is found in the stomach. The villi is in the lining of the small intestines.
in lungs
Yes. A villi is a fingerlike structure in a small intestine that absorbes the nutrition from the food you ate. A microvilli is basically a villi on a villi which is what actually does the absorbing
vessel walls must be thin to allow ease to transfer of molecules to these tissues i had this on a test and i got it right :)
Cillia is found in the trachea whereas villi/microvilli is found in the lumen of the small intestine
there isnt
what are the similarities between basketball and ring-ball