ANATOMY

Detailed explanation-1: -Charles Darwin listed a number of putative human vestigial features, which he termed rudimentary, in The Descent of Man (1871). These included the muscles of the ear; wisdom teeth; the appendix; the tail bone; body hair; and the semilunar fold in the corner of the eye.

Detailed explanation-2: -Wisdom teeth are considered a vestigial organ–no longer useful–because our diet has evolved. Early humans ate a mostly raw diet of foraged plants and hunted animals, which required a lot of rough chewing. That wore down their teeth.

Detailed explanation-3: -A vestigial structure is a biological structure that has lost a major ancestral function and is usually drastically reduced in size. Well-known examples include the eyes of blind cave fishes and blind cave salamanders, and the diminutive wings of kiwis and emus.

Detailed explanation-4: -Sinuses. Human cheekbones hold the maxillary sinuses. Appendix. It is one of the most commonly known vestigial organs. Coccyx. Wisdom Tooth. External Ear. Nictitating Membrane. Tonsils. More to Explore:

Detailed explanation-5: -Palmar Grasp Reflex. inherited reflex © Tony Wear/Shutterstock.com. Tails. In the sixth week of gestation, the human embryo possesses a tail, complete with several vertebrae. Wisdom Teeth. Nictitating Membrane. Auricular Muscles. Palmaris Longus Muscle. Pyramidalis Muscle.