***** erect during day and night dream in male
a) Changes in boys: • Boys increase in height as legs grow faster than other parts of the body. • Development of strong muscles. • Shape of the body changes as a result of broadening of shoulders and widening of chest. • There is a typical change in the voice due to enhanced growth in larynx forming a protruding structure called as Adam’s apple. Boys develop deep voice. • Active working of sweat glands resulting in the formation of sweat. • Sebaceous glands secrete much of oil which makes the skin glowing. Sometimes it also results in acne. • Intellectual, emotional and psychological maturity is attained. • Development of reproductive organs to produce gametes and secrete reproductive hormones. • Growth of facial hair and body hair under arm pits and pubic region.b) Changes in girls: • Girls exhibit rapid increase in height due to faster growth of legs. • Development of shaped muscles. • Development of broad shoulders and narrow waist. • Development of high pitched voice. • Sweat glands are active secreting lot of sweat. • Sebaceous glands secrete lot of oil and leads to development of pimples. • Growth of hair in the pubic region and under arm pits. • Ovaries are active in the formation of follicles. They also secrete female *** hormones. Females are mature and active in their reproductive phase. • Development of mammary glands under the influence of oestrogen hormone. • Females exhibit menstrual cycle during their reproductive phase. First menstrual flow is called as ‘menarche’. Termination of menstruation is called as ‘menopause’.\xa0
growth of pubic hair hair under armpit