T4 B3 2HVTTO

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

Welcome- 3EH

• Please take your seat
• Get you notebook , book and pen.
• Take out your coat and wait quietly for the Assignment in the next dia. 

The presence of a penis is an example of a ... sex characteristic (1 word)

Egg cels of a woman are produced:

1. Before she is born.
2. From birth till puberty.
3. From the start of puberty.
4. After puberty.

When is a woman most fertile?

1. Directly after menstruation
2. Right before menstruation
3. Directly after ovulation
4. Right before ovulation

external sexual organs woman

1

2

3

4

5

outer labia

inner labia

vagina opening

clitoris

urethra opening

Term vulva

During ovulation ..

1. An ovum is released from an ovary
2. An ovum dies in a fallopian tube
3. An ovum is fertilized by a sperm cell
4. The uterus gets rid of its inner lining

During menstruation ..

1. An ovum is released from an ovary
2. An ovum dies in a fallopian tube
3. An ovum is fertilized by a sperm cell
4. The uterus gets rid of its inner lining

The vagina is an exit for

1. Urine
2. Urine and inner lining from uterus
3. Inner lining from uterus
4. none of these

Thema 4: Reproduction and sexuality 

4.1Puberty

4.2 A women

4.3 A man

4.4 Sex and all that

4.5 Safe sex

4.6 Pregnancy

How it fits together 

To do (In the notebook)

1. Write down the numbers

 2. Fill in as many parts as you know 

You may use the book (p.27)

THE MALE REPRODUCTIVE PARTS

1. SPERMDUCT 
2. SEMINAL VESICLE GLAND AND COWPER GLAND
3. PROSTATE
4. EPIDIDYMIS
5. TESTICLES
6. SCROTUM
7. PENIS
8. BLADDER
9. URETHRA
10. GLANS
11. FORESKIN

Internal male reproductive system

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

Internal male reproductive system

• Seminal vesicle: 
• Adds fluid with nutrition to the sperm cells. 
• Prostate: 
• adds fluid to sperm cells. 
• Fluids + sperm cells =  called...?
• semen.
•  Urethra: 
• Transports urine + semen to outside.

• When does the testes start to function? (average)

• What is responsible for this change? 

• Why is it important to clean the foreskin of the penis?

• What is the reason to cut away the foreskin for some people?

Sperm or semen?

-Testes produce sperm cells.

-Epididymes store sperm cells-->release during orgasm.

-seminal vesicles+ prostate add fluid and nutrients--> activate sperm.

Semen = Fluid + sperm cells 

Erections

-Blood vessel to spongy erectile tissue relaxes.

-Blood fills erectile tissue-->penis becomes erect (hard).

-Erections can happen any time, uncontrolled. Especially during puberty.

Ejaculation

-Ejaculation is male orgasm.

-Amount of semen: average tea spoon of semen (100-400 million sperm cells)

- 'wet dream'

glans    foreskin

erictile tissue

sperm duct

urethra

epididymis

testis

scrotum

prostate

seminal vesicle

Through which parts, and in what order do sperm cells exit the male body

glans    foreskin

5

2

4

1

3

What you should do:

• Read pages  27-29
• Do asgmt  1-3, 5-8, 9c, 10c pgs. 30-34

Done with the above?

• Work on the next chapter(s)
• Learn for the test 
• Make other homework
• Read a book

Zs = Working in Silence

• No asking questions
• Silent, don't disturb anyone
  
• Stay at your  desk

Tidy Duty

Today these people are on tidy duty

• Desks: empty and straight
• Chairs:  underneath the desks
• Floor: no rubbish