Cette leçon contient 28 diapositives, avec quiz interactifs, diapositives de texte et 1 vidéo.
La durée de la leçon est: 50 min
Éléments de cette leçon
pregnancy
Slide 1 - Diapositive
learning objectives
What is pregnancy and which phases are there?
What is implantation and why is this process needed for a healthy embryo to form?
What structures are there to nourish and support the developing foetus?
Slide 2 - Diapositive
Pregnancy
Pregnancy is the period of development from zygote to birth.
Pregnancy takes place in the female reproductive system
Zygote = fertilized egg
Slide 3 - Diapositive
When?
7 days after fertilization there is the implantation of the embryo in the uterus lining. The next 9 months the zygote will develop into a baby.
Fertilization happens when a sperm cell meets an egg
Slide 4 - Diapositive
Slide 5 - Diapositive
In which phase of the menstrual cycle can an egg be fertilized?
A
Phase 1 (day 1-7)
B
Phase 2 (day 7-13)
C
Phase 3 (day 13-28)
Slide 6 - Quiz
On which day in the menstrual cycle is the implantation of the fertilized egg?
A
Between day 5-10
B
Between day 10-15
C
Between 15-20
D
Between 20-25
Slide 7 - Quiz
The first phase: zygote
A fertilized egg is also called a zygote.
The zygote will start dividing into a tiny clump of cells inside the oviduct (= cleavage).
The dividing zygote is called a embryo.
Slide 8 - Diapositive
Slide 9 - Diapositive
Slide 10 - Diapositive
twins
Slide 11 - Diapositive
Slide 12 - Vidéo
Slide 13 - Diapositive
What is cleavage? (choose the best answer)
A
cell divisions during which the zygote grows into a tiny hollow ball of cells
B
cell divisions before fertilization
C
cell division during which the embryo grows into the first foetal stage
D
cell divisions during which the zygote grows into an foetus
Slide 14 - Quiz
The second phase: embryo
When an embryo reaches the uterus, it implants itself into the uterus lining.
The uterus lining develops into a placenta, which is able to provide the nutrients and oxygen through the umbilical cord to the embryo. Through the umbilical cord the embryo get rid of waste.
So the umbilical cord is the connection between the mother and the child. Different substances can pass from mother to child through the umbilical cord, like alcohol, drugs and even some virusses.
Slide 15 - Diapositive
Membranes
During the 3th week of pregnancy two thin membranes start to grow around the embryo
Slide 16 - Diapositive
Membranes
Together the amnion and the chlorion form the amniotic sac. The amniotic sac is filled with amniotic fluid.
Slide 17 - Diapositive
Membranes
In the amniotic fluid the embryo floats.
Slide 18 - Diapositive
Explain how the embryo (and foetus) is protected.
Use the words: 'amnion', 'chorion', 'amniotic sac' and 'amniotic fluid'
Slide 19 - Question ouverte
Slide 20 - Diapositive
The third phase: foetus
After 2 months is the embryo is called a foetus.
The next 7 months the foetus will develop further into a fully grown baby.
So the umbilical cord is the connection between the mother and the child. Different substances can pass from mother to child through the umbilical cord, like alcohol, drugs and even some virusses.
Slide 21 - Diapositive
Match the different names with the different stages!
Zygote
Embryo
Foetus
Fertilized egg
Stage in which implantation happens
Month 2-9: development into a baby
Slide 22 - Question de remorquage
After .... weeks of pregnancy the embryo is called foetus
A
8
B
9
C
10
Slide 23 - Quiz
Pregnany lasts for ... weeks after fertilisation
A
38
B
39
C
40
D
41
Slide 24 - Quiz
The earliest moment a neonatal can be given birth to is after ... weeks of pregnancy