AP BIOLOGY

Detailed explanation-1: -The length and thickness of your vocal cords help determine how high or low your voice is, or your pitch. Thicker vocal cords produce a lower pitch, or a deep voice. Men and people assigned male at birth (AMAB): The hormone testosterone thickens and lengthens vocal cords during puberty, producing deeper voices.

Detailed explanation-2: -Cavities in the sinuses, the nose, and the back of the throat grow bigger, creating more space in the face that gives your voice more room to echo. All of these factors cause your voice to get deeper. Think of a guitar. When a thin string is plucked, it vibrates and produces a high-sounding tone.

Detailed explanation-3: -When length or size of vocal cords is more, more air from the lungs passes through the vocal cords, thus creating a low pitch sound. On the other hand, when the length of vocal cords is less, less air from the lungs passes through the vocal cords, thus creating a high pitch sound.

Detailed explanation-4: -A person with a deep voice has thicker vocal cords and larger cavities for the sound to resonate. A person with a raspy voice may have vocal cords that have nodules or polyps on them.

Detailed explanation-5: -As air passes over them, the vocal cords vibrate very quickly to produce sounds. The higher the rate of vibration, called frequency, the higher the pitch will be.