The Adam's apple, a prominent ridge on the male neck, is primarily the front edge of the thyroid cartilage that protects the larynx. During male puberty, rising testosterone causes this cartilage to grow forward at a sharper angle, lengthening vocal folds and the vocal tract. This change is thought to be a result of sexual selection, with a deeper voice and altered formants signaling larger body size and dominance to rivals and potential mates. AI
RANK_REASON The item discusses an evolutionary biology explanation for a human anatomical feature, citing scientific publications. [lever_c_demoted from research: ic=1 ai=0.1]
- Adam's Apple
- Frontiers in Psychology
- Journal of the Acoustical Society of America
- larynx
- Proceedings of the Royal Society B
- testosterone
- thyroid cartilage
- Trends in Ecology & Evolution
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