Reproduction and Sexuality

Ground Rules

No personal questions of anyone

Respect is absolutely mandatory!

In this unit…

We will be learning about the functions of the male and female reproductive systemsWe will talk about why parents choose to have childrenWe will review the events that lead to conception and birthWe will cover the birth processWe will cover the role relationships have in reproduction and pregnancy

What is sexuality?

Sexuality is part of human personality, including all aspect of being male or female

4 dimensionsBiological

Psychological

Cultural

Ethical

Why do we study sexuality?

To Understand ourselves

Understand others

Develop positive decision making skills regarding sexuality

Dispel myths and rumors

Statistics (MN student survey)

Survey

Why are families changing?

TechnologyIncreased communication tech. Allows families to be apart, yet maintain contactEase of travel allows people to live farther apart, yet still be an active part of their family

Changing societal valuesMarriage without children

Cohabitation

Divorce

Dual-Career Families

Still talking about languageGender

Biological basisXY sex chromosomes = malesXX sex chromosomes = female

Gender role developmentWe learn about the roles of males and females by observing the people who surround us

Parents and other relatives

People on TV

People in Movies

People in Books and Magazines

Gender stereotypesDefinition: A generalized notion of what a person is like based on only that person’s genderWays they can be harmful:

Limit a person’s opportunitiesMake a person question their sexualityInfluence people’s behavior in an inappropriate manner

Before we can continue…

We need to know about our Endocrine System

Get a red book, and fill out the worksheet with a partner

Male Reproductive System

Hormones and pubertyPuberty begins when the pituitary gland sends a chemical message to the testes = make lots of testosterone

Testosterone = changes in sexual characteristics

Changes in the Primary Sex CharacteristicsExternal and internal sex organs increase in size and maturityDevelopment of Secondary Sexual Characteristics

Increase in bone densityIncrease in muscle massDeepening of the voiceIncrease of metabolism

Increase in pubic/body hairLegs

Armpits

Face

Groin/scrotum

Chest

Other types of growth occur during puberty

Emotional

Social

SpiritualMorals and ethics

Mental

The male reproductive system

ExternalPenis

Male organ of sexual pleasure, reproductions, and urination

Scrotum

Holds and protects the testes; regulates temperature of the testes

Internal

UrethraGoes from the bladder to the outside worldPassageway for urine and semen

Vas DeferensLong thin cord that connect the testicles to the urethra

ProstateGland under the bladder and surround the urethraGives sperm a protein shake like fluid

Seminal VesiclesSmall glands that give sperm a “Power Bar”

Testes (factory)The two male gonads inside the scrotumSecrete testosterone and produce sperm

Epididymis

Where sperm maturesComma-shaped structures found on the back surfaces of the testes

Sperm Development and Delivery

Sperm growth begins in the testes

Sperm reaches maturity in the epididymis

Sperm production begins ~ 12

Average male produces ~ 150 million sperm/day

The role of the sperm cell is to carry the father’s ½ of the genetic material to the egg

Sperm Production

Sperm is produced in the testicles

From here it moves to the vas deferens where fluids are added to form semen.

The fluid from the seminal vesicles = 60% of the semen

This gives energy

Cowper’s gland

This adds fluid to lubricate the urethra

The prostate gland produces a fluid that protects the sperm as it travels through the female reproductive tract

Ejaculation

This is the ejection of the semen from the penis.

When the semen enters the female, the sperm “swim” upward using their tails.

Sperm can survive in the female body for several days

If every dot was a sperm cell…

Erections

An erection occurs when the penis fills with blood making it stiff and erect.

Humans are a minority, they don’t have a penis bone.

Nocturnal emissions

Wet dreams

It is normal for these to happen, and it is normal for these not to happen.

Keeping the reproductive system healthy

CleanlinessProtection and preventionTight clothing – avoidAny signs of pain when urinating, unusual discharges, or sores require medical examination.Testicles should be examined monthly for cancer

Disorders of the Male Reproductive System

Sterility

Undescended Testes

Inguinal Hernia

Enlarged prostate

Cancer of the Prostate and Testes

Write 2 sentences describing your assigned disorder