write short notes on the following:. a) secondary sexual characters. b) Adam's apple
Answers
The voice box or the larynx begins to develop at puberty. In fact, boys develop larger voice boxes as compared to girls.
This should be seen as a protruding part of the throat and called Adam’s apple.
The voice becomes worse for boys. Secondary sexual characters are nothing but it distinguishes a girl from a boy. Hairs must be grown at specific regions in body.
Explanation: (a) secondary sexual characters: The reproductive system in humans is highly evolved.Humans beings are unisexual,i.e., male and female reproductive organs are present in different individuals.The external features by which males can be distinguished from females are called secondary sexual characters.
(b) adam's apple:adam's apple is actually a partial growth of voice box larynx.The larynx is made up of 9 cartilages, one of which is the largest, called as thyroid cartilage.The adam's apple is formed due to elongation of the thyroid cartilage which protrudes out in front of the neck.This is caused mainly by some male hormone during adolescence.As a result of this,muscles attached to the cartilage get loosened and thickened.When air passes through these loosened and thickened chords a hoarse sound is produced.The laryngeal prominence is usually more prominent in adult men than in adolescent boys.
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