2. 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

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

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

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

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

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

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

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

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

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

12. 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

13. 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.

14. 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.

15. 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

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

17. 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

18. 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

19. 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.

20. 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.

21. 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.

22. 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.

23. 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

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

25. 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

26. 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.

27. 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.

28. 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.

29. 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

30. Spermatogenesis
Is process by which sperm cells are produced

31. 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

32. Stop here Mrs. McCann