Write short notes on the following.

Secondary sexual characters.

Secondary sexual characters are those characters which appears at the time of puberty in human. These characteristics are controlled by hormones and help us to distinquish between sexually mature males and females.

Secondary sexual character's in Females are—

i. Enlargement of breast and erection of nipples.

ii. Growth of body hairs basically near underarm and pubis.

iii. Development of thigh muscles.

iv. Waist is small.

v. Widening of hips.

vi. Ovary start producing female sex hormones(estrogen).

Secondary sexual character's in males are—

i. Growth of body hair (include chest hair, pubic hair, underam hair).

ii. Growth of facial hair.

iii. Enlargement of larynx(Adam's apple).

iv. More muscle mass than females.

v. More secreation of oil and sweat glands.

vi. Broadens of shoulder and chest.

vii. Testes start producing male sex hormone (testostrone).