The human throat consists of 1 1 cartilage as a scaffold, and the most important and largest one is called thyroid cartilage. At the age of 2 months, thyroid cartilage began to develop and continued to grow every year until the age of 5-6 after birth, but the growth of thyroid cartilage basically stopped during the period from 5-6 to adolescence. So the thyroid cartilage of boys and girls is the same. After entering adolescence, due to the increase of androgen secretion, this makes men have Adam's apple.
Extended data:
About male Adam's apple is small or not obvious:
The development of Adam's apple is related to age and sex. Before puberty, there was little difference in the development of male and female throats, but in adolescence, the female larynx did not increase significantly, while the male larynx increased rapidly under the action of androgen, and the thyroid cartilage of the neck protruded forward, which nearly doubled the anterior and posterior diameter of the larynx and became a deep male voice.
This is the physiological process of Adam's apple development. Knowing this process, we can understand why there is no obvious difference between male and female voices before puberty, that is, boys' voices are very similar to girls' voices, while after puberty, men's throats become larger and emit deep male voices, while women's throats become smaller and emit sharp female voices. Just like some musical instruments, the sound with small diameter is sharper, and the sound with large diameter is richer. The reason is the same.
References:
Baidu encyclopedia-Adam's apple