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Their lower legs are bowed backwards significantly, compared to asari or humans. They also have three thick fingers on both hands which include a thumb, an index finger, and a long finger, similar to the middle fingers for humans, as well as three toes on each foot. Quarian facial structure and hair actually makes them the most similar to humans in physical appearance.
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Their eyes can see into the ultraviolet end of the spectrum their suit HUDs can show information in those wavelengths. Their ears or ear analogues differ in a noticeable fashion from those of humans, with references made to "what for the quarian version of an ear". Quarians have an endoskeleton, lips, teeth, and two eyes with eyelids and tear ducts. Quarians are generally shorter and of slighter build than humans.
