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9. Primary and secondary sexual characteristics and changes observed in puberty

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Boys attain puberty at the age of \(18\) to \(25\) years

Adam's apple is a protrusion of the throat in adolescent boys

Primary sexual characteristics are not invoved in the reproduction

Sweat glands is an endocrine gland

In girls, the muscles of the voice box grow out of control causing hoarseness in voice

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