ðThe human sinuses serve no known purpose and may disappear in the future.
ðExtrinsic ear muscles in humans have no function, except for being reactive to positive emotions.
ðŽWisdom teeth are unnecessary and often require removal due to their lack of space in modern human jaws.
ðĶīThe neck ribs present in less than 1% of the population can cause nerve and artery problems and are often removed.
ðŠThe Paul Morris muscle, running from the elbow to the wrist, is already missing in 11% of humans and could disappear completely.