YR3_B6_LSN3.2

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BiologieMiddelbare schoolhavo, vwoLeerjaar 3

This lesson contains 15 slides, with interactive quizzes and text slides.

Items in this lesson

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Slide 1 - Slide

What is the purpose of the menstruation?
A
shedding the uterus lining
B
removing the unfertilized ovum
C
losing blood
D
discarding the embryo

Slide 2 - Quiz

Describe what happens during ovulation

Slide 3 - Open question

What does NOT happen during the follicular phase?
A
The follicle matures
B
The uterus lining grows thicker
C
Estrogen is produced
D
Progesteron is produced

Slide 4 - Quiz

The most fertile period of a woman during her menstrual cycle is...
A
during menstruation
B
the start of the follicular phase
C
the end of the follicular phase
D
the end of the luteal phase

Slide 5 - Quiz

WHERE is the corpus luteum located during the luteal phase
A
uterus
B
ovary
C
fallopian tube
D
vagina

Slide 6 - Quiz

LESSON 3.2

Pregnancy

Slide 7 - Slide

Learning objectives

  • I can describe the key events that lead up to pregnancy
  • I can explain what happens to the female body during pregnancy
  • I can explain how the embryo develops during pregnancy
  • I can describe the process of delivery

Slide 8 - Slide

Keywords
  • Implantation
  • hCG
  • amniotic sac
  • umbilical cord
  • placenta
  • embryo
  • foetus
  • contractions
  • oxytocin
  • dilation

Slide 9 - Slide

Getting pregnant: fertilization

  • fertilization in fertile period
  • ovum = 24 hours fertile
  • sperm cells = up to 7 days fertile
  • zygote = fertilized ovum
  • approximately 5-7 days till implantation
  • nutrition of zygote comes from storage
  • mother provides nutrition after implantation



Slide 10 - Slide

Pregnancy 
  • 3 Trimester ( tri = three; mes = month)
  • from zygote to foetus
  • trimester 1 = critical period of pregnancy: vital organs are built
  • Embryo produces hCG --> mother keeps producing progesteron
  • Progesteron prevents menstruation
  • Until week 8: embryo
  • After week 8: foetus
  • trimester 2 and 3: growth and maturation



Slide 11 - Slide

Placenta
  • Thick tissue, full of blood vessels and glands
  • provides connection between mother and foetus
  • NO direct blood to blood connection: blood does not mix
  • Nutrients and oxygen diffuse from mother to child
  • Waste products and CO2 diffuse from child to mother




Slide 12 - Slide

Delivery / Labour
  • contraction phase
  • oxytocin causes muscles in uterus wall to contract
  • goal: cervix flattens and opens up
  • dilation
  • expulsion phase: contractions force mother to push the baby out
  • afterbirth: placenta and amniotic sac are expelled from the uterus



Slide 13 - Slide

Learning objectives

  • I can describe the key events that lead up to pregnancy
  • I can explain what happens to the female body during pregnancy
  • I can explain how the embryo develops during pregnancy
  • I can describe the process of delivery

Slide 14 - Slide

HW FOR LSN 4:

  • complete assignments during lesson 4 assignmentsHW4
  • prepare (well) for an ENTRY TICKET assignment coming Monday

Slide 15 - Slide