7 Vestigial Features of the Human Body

Palmar Grasp Reflex: The palmar grasp reflex is a characteristic behavior of human infants, developing as early as 16 weeks.

Tails: In the sixth week of gestation, the human embryo possesses a tail, complete with several vertebrae.

Wisdom Teeth: As the human species migrated out of Africa, it came to populate a variety of habitats.

Nictitating Membrane: The plica semilunaris is a fold of conjunctiva at the inner corner of the human eye.

Auricular Muscles: The auricular, or extrinsic, muscles of the human ear include the anterior auricular muscle.

Palmaris Longus Muscle: Research has indicated that the palmaris longus, a thin strip of muscle running between the wrist and the elbow.

Pyramidalis Muscle: The pyramidalis muscle is a paired, triangular-shaped muscle that, when present, is located in the lower abdomen.

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