YR3_Longman R&I_LSN7 5.2 pregnancy

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

LESSON 7

REPRODUCTION & INHERITANCE

Learning goals lesson 7

• I know what the menstrual cycle and how it works.
• I know what hormones and processes are involved and can explain this to others.
• I know how a human can get pregnant and how this can be prevented naturally.
• I know what phases there are in the pregnancy and how a fetus develops.
• I know how a human will give birth and can explain this process.

Key words lesson 7

• oestrogen
• progesterone
• menstruation
• fertilisation
• uterus lining
• dilation contractions
• embryo
• pushing contractions

READ LONGMAN 5.2

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.

Key words lesson 7

• oestrogen
• fertilisation
• menstruation
• progesterone
• uterus lining
• dilation contractions
• embryo
• pushing contractions

READ LONGMAN 5.2

Homework

• Complete the exercises of Longman 5.2
  

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