Reproduction 4.2 4.3

• Biologie
• Middelbare school
• vmbo t, mavo, havo
• Leerjaar 2

Reproduction 4.2 4.3

Today

• Short recap hormones
• 4.3 Becoming fertile
• Working on assignments

The male sex hormone is...

1. testosterone
2. estrogen

The female sex hormone is

1. testosterone
2. estrogen

estrogen is produced in the

1. pituary gland
2. ovaries
3. testes
4. uterus

testosterone is produced in the

1. ovaries
2. epididymis
3. testes
4. pituary gland

Primairy sexual characteristics

Secundairy sexual characteristics

facial hair

uterus

scrotum

breast growth

chest hair

vulva

4.3 Becoming fertile

• You can explain how sperm cells and egg cells are formed.
  
•  You can describe the menstrual cycle.

What does fertility mean?
What does it mean if you are fertile?

Production of sperm cells

During puberty the 

testes become active

Sperm cells + fluids

= semen

Maturation of an egg cell

Egg cells (ovum) ripe in ovaries

Every 28 days (4 weeks) one 

egg cell is released = ovulation

Menstruation

Uterus has a thick lining = endometrium

For the embryo to develop

When egg cell is not fertilized, 

endometrium partly detaches

= menstruation

Menstrual cycle

Menstruation products

To absorb the endometrium and the blood during menstruation

What do seminal vesicles add to sperm?

1. Nutrients and fluid
2. Oxygen
3. Hormones
4. Waste products

Where are sperm cells stored temporarily?

1. Epididymis
2. Scrotum
3. Urethra
4. Prostate gland

What is the process of releasing an egg called?

1. Implantation
2. Ovulation
3. Fertilization
4. Menstruation

How often does an egg mature?

1. Once a week
2. Once every four weeks
3. Once a year
4. Twice a month

What happens if the egg cell is not fertilized?

1. Endometrium detaches and bleeds
2. Ovulation happens
3. Pregnancy occurs
4. Egg cell implants in uterus

What covers the inside of the uterus?

1. Ovary
2. Muscle layer
3. Fallopian tube
4. Endometrium lining

Working on assignments

Read 4.3

Do assignment 1, 2, 3, 4, 6, 8

Homework for next week!