4.1 Sexual organs

• Biologie
• Middelbare school
• havo, vwo
• Leerjaar 2

Welcome- 3EH

• Enter the room quietly
• Take your seat
• Get you book, notebook, and a pen
• Wait quietly for the instructions in the next dia.

To do - 7 min (ZS)

Read p. 8 - 11

Highlight the bold terms and copy them to your notebook 

At what age does puberty begin?

020

Who starts puberty first?

1. Boys
2. Girls

When does puberty end?

1. When you start to grow hair under your armpits and become tall enough.
2. When you are sixteen years old.
3. When the psychical (psychische) changes that tyically occur during puberty have been completed.

Sexual characteristics

Anatomical characteristics that define your sex

Primary > present at birth

Secondary > present after puberty

Primary

Secondary

Sexual characteristics girls

Primary

Secondary

Sexual characteristics boys

Physical changes

sexual characteristics = all the differences between girls and boys

• primary sexual characteristics = visible from birth

• secondary sexual characteristsic = develops between the ages of 10 and 16 (puberty)

Physical changes of the woman

The sexual characteristics present at birth are called the primary sexual characteristics:

- Vagina and labia

- Ovaries.

The sexual characteristics that start appearing from about the age of ten onwards are called: The secondary sexual characteristics 

- Breasts have grown,

- Wider hips

- Reproductive organs will start to function.

Physical changes in men

The primary sexual characteristics:

- Penis and scrotum

- Testes

The secondary sexual characteristics:

- More muscular body,

- Deeper voice, 

- Beard and chest hair

- Reproductive organs will start to function.

External male reproductive system

1.  Testes: Makes the sperm cells
2. Scrotum: Protects testes and has a lower temperature, which is good for sperm cell production. 
3. Epididymis: Temporary storage for sperm cells.
4. Sperm duct: Transports the sperm cells.

External male reproductive system

5. Seminal vesicle: Adds fluid with nutrition to the sperm cells. 
6. Prostate: adds fluid to sperm cells. 
Fluids + sperm cells =  called semen.

7. Urethra: Transports urine + semen to outside.

Man

Primary characteristics

Penis and scrotum

Secondary characteristics

Beard, chest hair

Lower voice

Bigger penis and testes

More muscles

Woman

Primary characteristics

Vulva (vagina, labia and clitoris)

Secondary characteristics

Bigger breasts

More rounded shape

Geestelijk

• Volwassen worden
• Seksualiteit
• Relatie(s) beginnen
• Geslachtsgemeenschap

Sociaal 

Puberty

During puberty, hormones in the body let many physical changes happen:

• Growth spurt
• Growth of hair: under arms and near sexual organs (pubic hair)
• Fertile
• Secondary sexual characteristics

Intersex

• Mix of male and female sexual characteristics
• Visible from birth or later (during puberty)
• Not the same as transgender!

Other changes

Mental

• Growing up/maturing
• Sexuality
• Falling in love
• Having intercourse

Social

• Reacting differently 
• parents/family 
• Friends

MALE PARTS

FEMALE PARTS

BOTH

URETHRA

VAGINA

PENIS

BLADDER

LABIA

GLANS

TESTICLES

UTERUS

OVARIES

CLITORIS

SCROTUM

PROSTATE

To do / H.W

Complete ex. 1-3 , 5-8 

p.11-14

Done? 

Make a list of the terms out basic 4.1 in your notebook