AP BIOLOGY

Detailed explanation-1: -The human vermiform appendix is a vestigial structure; it no longer retains its original function. Vestigial structures are anatomical structures of organisms in a species which are considered to have lost much or all of their original function through evolution.

Detailed explanation-2: -The human appendix may be considered as a vestigial organ as it has been proved that the removal of the organ after infancy does not create any harm [1-3]. But the appendix has developed to the extreme in human and strategically placed to an important site at the junction of midgut and hindgut.

Detailed explanation-3: -Structures that have no apparent function and appear to be residual parts from a past ancestor are called vestigial structures. Examples of vestigial structures include the human appendix, the pelvic bone of a snake, and the wings of flightless birds.

Detailed explanation-4: -Few examples of vestigial organs in human are pinna of the ear, wisdom teeth, the vermiform appendix and the tailbone. Eyelids are not vestigial organs as they cover and protect the eyes. Q. Vermiform appendix is a part of human digestive system.