Male Reproductive System Has many structures and functions main function of system is to provide sperm for reproductive purposes structures go through many changes during puberty

The Male Anatomy Includes: testis produces sperm sperm and other ejaculatory fluids together are called semen

The Male Anatomy Includes: pituitary gland secretes hormone testosterone, which causes production of sperm

The Male Anatomy Includes: scrotum skin-like pouch made of skin and muscles which holds testes acts as a protection and temperature regulator

The Male Anatomy Includes: epididymis one attached to each testicle provides for storage, transmission and maturation of sperm

The Male Anatomy Includes: vas deferens serve as excretory ducts for testes connects epididymis and urethra

The Male Anatomy Includes: urethra passageway for eliminating urine and semen

The Male Anatomy Includes: seminal vesicles secretes fluids, which nourish sperm and increase mobility fluid make up part of the semen

The Male Anatomy Includes: prostate gland secretes milky alkaline fluid into semen increasing mobility of sperm

The Male Anatomy Includes: penis made of muscle, spongy tissue and blood vessels contains urethra discharges urine and semen from body

Puberty Is the period of time when sexual characteristics develop and sexual organs mature Is caused by the brain releasing a special hormone called the gonadotropin-releasing hormone when hormone reaches pituitary gland, gland releases two more puberty hormones: luteinizing hormone follicle-stimulating hormone

Luteinizing & Follicle-Stimulating Hormones Stimulate secretion of sex steroids from gonads or testes starts synthesizing and secreting testosterone Are critical for sperm production and maturation A boy will make 12 TRILLION sperm in his lifetime. Sperm takes about 72 days to mature.

Luteinizing & Follicle-Stimulating Hormones Are secreted from the pituitary gland and signal testes to begin producing sperm and testosterone testosterone causes development of secondary sex characteristics in males Secondary sex characteristics are visible physical changes to the body during puberty.

Puberty Occurs between ages of 9 and 16 Causes changes which occur gradually or very rapidly will see greatest amount of growth during adolescence will experience many growth spurts and puberty changes

Adolescence Is the period of development which occurs around the age 11 adolescents face growth spurts and puberty changes

Emotional Changes Occur during puberty such as the following: desire to control own life and be independent emotions and feelings are stronger than before desire for relationships increases mood changes bad temper

Physical Changes Which occur include: enlargement of testicles first change usually seen in males penis enlargement begins about one year after testicles begin growing, at approximately age 13, and continues to grow for nearly two years more muscular and angular shape to body features testosterone causes increase in muscle mass

Physical Changes Which occur include: weight height increases by 15 to 65 lbs. height increases by four to 12 in. It may seem like your feet, hands, arms and legs are growing faster than the rest of your body.

This is normal, but if it causes concern, talk to a doctor. Physical Changes Which occur include: swelling in boys’ chest area caused by increase in hormones in body during puberty This is normal, but if it causes concern, talk to a doctor.

Physical Changes Which occur include: oil glands become more active during puberty causes acne Acne usually begins around the start of puberty and lasts throughout the teen years.

Acne Is a skin condition appearing as bumps Is caused by the oil glands’ increased production of oil during puberty Includes four types: whitehead blackhead pimple cyst If you are bothered by acne, you can visit your doctor to receive a prescription.

Physical Changes Which occur include: hair growth begins to grow on body between ages 12 and 14 due to puberty, will occur on the following areas: face arms and underarms chest legs around the genitals buttocks

Facial Hair Once developed, will require shaving frequency of shaving will depend on amount of hair grown

Voice Changes Will occur during puberty Are triggered by testosterone testosterone causes larynx, voice box and vocal cords to grow Are dependent upon how large a boy’s larynx grows size of larynx determines how deep voice will be as the larynx grows, it pushes Adam’s apple forward

Cracks & Squeaks in Voice Are common when larynx is growing and voice is changing Can happen at any time Are perfectly normal Do not be embarrassed if your voice cracks. This is very normal. Remember, this happens to all boys.

Puberty In relation to reproduction, is the transition period where males become able to reproduce An erection is when the penis is filled with blood, making it hard and erect.

Erections Occur when penis is filled with blood, making it hard and erect Occur more frequently during puberty occasional and spontaneous erections occur throughout life for males Can occur with or without sexual stimulation Remember, this is a natural part of growing up. This is nothing to be embarrassed about.

Sperm Begins being produced in male during puberty Is male reproductive cell Is produced in testes through a process called spermatogenesis Is composed of a head, midpiece and tail

Spermatogenesis Is process by which sperm cells are produced

Semen Is composed of sperm and other bodily fluids May be released during an erection this is known as ejaculation when semen is ejaculated into an ovulating female, conception and pregnancy can occur

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