Unit 4: reproduction B3 Good one

• Biologie
• Middelbare school
• vwo
• Leerjaar 3

Planning

• Quick recap B1 and B2 
  
• Bs 3 + b4: female reproductive system 
• Homework

Learning goals

• At the end of the class you know the parts of the female reproductive system and what they do
  
• You know how ovulation and fertilization works
  
•  You know the misconceptions about the female reproductive system.

you are changing

During puberty you change a lot. Especially on the following levels:

1. Physical 

2. Emotional 

3. Social 

The features of people that tell us their gender are called sexual characteristics.

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.

Internal 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.

Internal 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.

external female reproductive system

External part of the female reproductive system is called the vulva.

Clitoris: is the pleasure center of the vulva.

Inner labia: Glands in the inner labia produce mucus during sexual arousal. This lubricates the entrance of the vagina so the penis can slide in easier. 

Internal female reproductive system

Ova = female sex cells

Ovum = egg cell

Ovulation

• Ovulation in Dutch = eisprong
• Ovulation = when a ripe egg cell is released by the ovary
• Happens every 4 weeks
• One week left ovary, other week right ovary
• Egg cell lives 24 hours

Fertilization - when sperm cell enters egg cell

Menstruation

When an egg is not fertilised, part of the uterus lining detaches. This is called menstruation.

Average age for girls to start their menstruation is 13.

The menstrual cycle

• After the menstruation the uterus linings starts to grow thicker again and have more blood vessels.
  

•  Ovulation starts +- around 14 days after the start of the last menstruation.

• Next menstruation starts about 28 days after the start of the last one.

Vagina info

1. Never wash your vagina with soap!!

This can cause infections.

2. Discharge is normal (penises do it too)

3. G-spot is not a thing. Most of the time vagina's are not that sensitive.

4. Avoid touching the anus and afterwards the vagina or vaginal region (can cause UTI, blaasontsteking)

Websites with more info

• https://www.cosmopolitan.com/health-fitness/advice/a3182/vagina-facts-0110/

• https://www.youtube.com/watch?v=KHF8mB_8LUM 

       --> (Look up Mama Doctor Jones for more videos!)

Homework

Basic 3: The female reproductive system

Exercise: 9,10,11,12