YR3_Longman R&I_LSN8 5.3 puberty + hormones

• Biologie
• Middelbare school
• havo, vwo
• Leerjaar 3

LESSON 8

REPRODUCTION & INHERITANCE

Learning goals lesson 8

• I know what the various methods of contraceptives are and how they work. 
• I know which contraceptives protect you from pregnancy/STD.
• I know what types of contraceptives there are, how they work and how they could be combined to improve effectiveness.
• I know what STD’s are and what types there are. 
• I know how people can contract STD’s and also how they can prevent them.

PRIMARY SEXUAL CHARACTERISTICS

• Are present at birth.
• Show a clear difference between the sexes.

examples: 

male: penis

female: labia & vagina

SECONDARY SEX. CHARACTERISTICS

• Develop later in life.
• Form under the influence of hormones.
• Often make the visual differences between the sexes bigger. 

examples: 

male: muscle development, sperm production

female: breasts develop, menstrual cycle.

BABY

CHILD

ADOLESCENT

ADULT

ELDERLY

Key words lesson 8

• barrier method
• chemical method
• intra uterine method
• natural method
• emergency contraception
• STD's

READ LONGMAN 5.3

Contraception

The goal of contraception is to prevent the fertilisation of and egg cell (conception).

Different methods are:

• barrier method
• chemical method
• intra uterine method
• natural method

Emergency Contraception

If you are worried your are pregnant. There are options:

• morning after pill (first 72 hours)
• IUD (first 120 hours)
• abortion (ethics)

STD's:

• Diseases spread mostly by sexual contact.
• Can be various pathogens.
• Some can be cured, some cannot.

Key words lesson 8

• barrier method
• chemical method
• intra uterine method
• natural method
• Emergency contraception
• STD's

READ LONGMAN 5.3

Key words hormones:

• pituitary gland
• thyroid gland
• adrenal gland
• negative feedback loop
• FSH
• LH
• oestrogen
• progesteron
• testosterone

Watch the video's please.

Menstrual cycle

• Is between 2-9 weeks (average 28 days=4 weeks).
• it causes periods (shedding of uterus lining)
• Women are fertile around and after the ovulation (egg cells lives ~24 hrs).
• Hormone levels are constantly changing. 

Menstrual cycle

• FSH- Follicle Stimulating Hormone
• Oestrogen- plays a role in ovulation and stimulation thickening of uterus lining
• LH - causes ovulation
• Progesteron - maintains thick uterus lining

Pregnancy cycle

• Fertilised egg produces HCG
• HCG causes Progesteron to stay high
• HCG is known as the pregnancy hormone, this is what you test for with a pregnancy test.

Kwizl

• Go to Kwizl
• Start with ET_Y3 Longman 5.1

What to do now:

• Check you have completed and checked all hw assignments till now.
• check your learning goals
• check your keywords
• review all notes till now
• Study for the entry ticket.

Homework

• Complete the exercises of Longman 5.3
  

• Study the keywords (use StudyGo)
• Read Longman 5.3