BS 5 and 7 - Safe sex

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

Which contraceptives do you know?

Unreliable

Rhythm method

• Woman keeps track of her menstrual cycle
• No sex during fertile period

Coïtus interuptus (Withdrawal method)

• During sex, man stays aware of reaching orgasm
• Right before he ejaculates, removes his penis from vagina
• Orgasms 'outside' woman

The Rhythm method is nearly useless when preventing pregnancies. But still has a use.
What is this use?

Short protection

Condom♂ and ♀

• Only during intercourse, throw away afterwards
• Prevents Sperm from entering the vagina
• Very good protection against pregnancy and STI's

The (contraceptive) pill

• Use 1 every day for 3 weeks
• Prevents ovulation
• 4th week = break week, menstruation happens
• Very good protection against pregnancy, but only 
• when used daily!

Longer protection

Nuvaring

• Stays inside vagina for 3 weeks
• Comparable to contraceptive pill
• Stops ovulation
• Very good protection against pregnancy

Contraceptive injection

• Injection every 3 months
• Stops ovulation
• Very good protection against pregnancy
• Con: can take up to 2 years to become fertile again

Contraceptive pad

• same as nuva ring but on the skin

Long protection

IUD/Coil

• GP(general practitioner) puts IUD inside of uterus
• Kills sperm and prevents implantation
• 1 - 5 years of protection
• Con: can hurt slightly

contraceptive implant

• Rod the size of a match
• Underneath the skin in arm
• Stops ovulation
• Up to 3 years of protection

For always

Sterilization

• Physician seals off sperm ducts in men or fallopian tubes in women
• Sperm cells/ova can't reach penis/uterus
• Testes/ovaries remain in the body, keep working
• Man will still produce a substance during ejaculation
• Pro: no chance of getting pregnant
• Con: practically irreversible

 pregnant possibilities

2 ways to stop a pregnancy

Morning-after-pill

• Use shortly after intercourse (best within 12 hours, max within 72 hours)
• Bought at pharmacies or drugstores (kruidvat, etos, etc.)
• Contains a lot of hormones that stop fertilization.
• Using pill often is dangerous!
• Women often get sick because of the morning after pill, this can make you throw up the pill

Abortion

• There are 3 types of abortion, depending on the time between abortion and intercourse

Abortion is a form of murder

Strongly agree

Agree

Disagree

Strongly disagree

The pregnant woman should be the only one that gets to decide about an abortion

Strongly agree

Agree

Disagree

Strongly disagree

You should be able to get an abortion without any questions asked

Strongly agree

Agree

Disagree

Strongly disagree