Which of the following organs is NOT vestigia | vedclass

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(D) Vestigial organs are anatomical structures that have lost their original ancestral function through the course of evolution. $A$. The vermiform ap

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Epiglottis

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(D) Vestigial organs are anatomical structures that have lost their original ancestral function through the course of evolution. $A$. The vermiform appendix is a vestigial structure in humans,as it was once used for cellulose digestion in ancestors. $B$. The nictitating membrane (third eyelid) is a vestigial fold of tissue in the corner of the human eye. $C$. The muscles of the external ear (auricular muscles) are vestigial in humans as we can no longer move our ears to detect sound direction. $D$. The epiglottis is a functional cartilaginous flap that prevents food from entering the trachea during swallowing. It is essential for survival and is not vestigial.

Which of the following organs is $NOT$ vestigial in humans?

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