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2

Objectives1. To identify the structures and

functions of male anatomy.2. To examine the changes which

occur during puberty.3. To analyze the reproductive process.4. To learn common diseases

associated with males.

3

Main MenuMale Anatomy

Puberty

Common Male Diseases

Reproduction

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5

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

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The Male Anatomy

• Includes:– testis

• produces sperm– sperm and other ejaculatory fluids

together are called semen

7

The Male Anatomy

• Includes:– pituitary gland

• secretes hormone testosterone, which causes production of sperm

8

The Male Anatomy

• Includes:– scrotum

• skin-like pouch made of skin and muscles which holds testes

• acts as a protection and temperature regulator

9

The Male Anatomy

• Includes:– epididymis

• one attached to each testicle• provides for storage, transmission and

maturation of sperm

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The Male Anatomy

• Includes:– vas deferens

• serve as excretory ducts for testes• connects epididymis and urethra

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The Male Anatomy

• Includes:– urethra

• passageway for eliminating urine and semen

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The Male Anatomy

• Includes:– seminal vesicles

• secretes fluids, which nourish sperm and increase mobility

– fluid make up part of the semen

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The Male Anatomy

• Includes:– prostate gland

• secretes milky alkaline fluid into semen increasing mobility of sperm

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The Male Anatomy

• Includes:– penis

• made of muscle, spongy tissue and blood vessels

• contains urethra• discharges urine and semen from body

15

The Male Anatomy

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ASSESSMENT

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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

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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.

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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.

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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

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Adolescence

• Is the period of development which occurs around the age 11– adolescents face growth spurts and

puberty changes

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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

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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

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Physical Changes

• Which occur include:– weight

• increases by 15 to 65 lbs.– height

• increases by fourto 12 in.

It may seem like your feet, hands, arms and legs are growing faster

than the rest of your body.

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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.

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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.

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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.

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Types of Acne

• Include:– whiteheads

• when a clogged pore closes and bulges out from skin

– blackheads• when a clogged

pore stays open and surface becomes dark

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Types of Acne

• Include:– pimples• small red infection

caused by bacteria and dead skin cells

– cysts• clogged pores

deep in skin; possibly leading to a larger infection

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Acne Prevention Techniques

• Include:– drinking the recommended six to eight

glasses of water each day– washing your face every day– using over-the-counter products

designed to fight breakouts– keeping hair off of

face• hair’s natural

oils can cause face to become oily

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Acne Prevention Techniques

• Include:– using oil-free products on your face– avoiding putting your hands on your

face• your hands can transfer bacteria to your

face and this causes breakouts– visiting a doctor to talk about your acne

and to receive a prescription

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Physical Changes

• Which occur include:– skin glands becoming more active

during puberty• glands produce chemicals, which cause

new and different smells to develop– this smell is referred to as body odor

Keeping clean by showering

and using deodorant will help lessen the smell.

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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

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Facial Hair

• Once developed, will require shaving– frequency of shaving

will depend on amount of hair grown

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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

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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.

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ASSESSMENT

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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

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Acknowledgements

Mayo Clinicwww.mayoclinic.com

Kids Healthwww.kidshealth.org

Center for Adolescent & Family Studieshttp://education.indiana.edu/cas/adol/adol.html

American Society for Reproductive Medicinehttp://www.asrm.org

American Academy of Family Physicianshttp://www.familydoctor.org

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Acknowledgements

Production Coordinator

Megan O’QuinnDusty Moore

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Megan O’Quinn

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Jessica Odom

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Clayton Franklin

Collaborator

Brandi Egli

Brand Manager

Megan O’Quinn

Executive Producer

Gordon W. Davis, Ph.D.

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