In deze les zitten 23 slides, met interactieve quizzen, tekstslides en 3 videos.
Lesduur is: 45 min
Onderdelen in deze les
Fertilisation & pregnancy
Slide 1 - Tekstslide
Describe the hormonal changes that occur after fertilisation happens
Describe the hormones involved in pregnancy
Describe the important stages during pregnancy
Slide 2 - Tekstslide
During which days of a typical 28 day menstrual cycle does the follicular phase occur?
Slide 3 - Quizvraag
If the ovum is to be fertilised, where is the most common site of fertilisation?
Slide 4 - Quizvraag
___________ is released from the pituitary gland and stimulates the follicles in the ovary to mature.
Slide 5 - Quizvraag
If the ovum is not fertilised, what causes the cycle to end and menstruation to start?
Peak in progesterone
Peak in oestrogen
Lack of oestrogen
Lack of progesterone
Slide 6 - Quizvraag
Slide 7 - Video
Sperm cells carry enzymes
Egg cell puts up permanent block
Egg cell completes meiosis 2
Slide 8 - Tekstslide
Slide 9 - Tekstslide
Slide 10 - Tekstslide
First period of pregnancy
Cleavage divisions - No growth
Blastocyst - First structures
Slide 11 - Tekstslide
Slide 12 - Link
Slide 13 - Video
Formed by embryo and mother together
Exchange of nutrients and waste
No direct blood contact!
Slide 14 - Tekstslide
Slide 15 - Tekstslide
Slide 16 - Tekstslide
Slide 17 - Tekstslide
Which of these hormones does not increase during pregnancy?
Slide 18 - Quizvraag
Which of the following statements best describes the placenta?
it is a structure that remains in the ovary after the egg has been discharged, it produces human chorionic gonadotropin
it is an organ formed in the uterus during pregnancy, it produces hormones that help a pregnancy go smoothly and connects the mother and fetus
it is the organ that holds eggs waiting to be fertilised, in the later stages of pregnancy it becomes inactive
as the placenta is being formed, it produces the first detectable hormone of a pregnancy; this hormone is detected by blood or urine pregnancy tests
Slide 19 - Quizvraag
Mary thinks she might be pregnant and purchases a pregnancy test. The pregnancy test shows a positive result. Why did the test come back positive?
The test detected higher than normal levels of progesterone
The test detected lower than normal levels of oestrogen
The test detected the presence of HCG, Human Chorionic Gonadotropin
The test detected the presence of HPL, Human Placental Lactogen
Slide 20 - Quizvraag
Anne also thinks she might be pregnant and purchases a pregnancy test. She takes the test two days after she had intercourse. The pregnancy test shows a negative result, so Anne is relieved. Mary tells her the result cannot be trusted yet. Is Mary right?
No, the test can be taken straight after intercourse
No, the egg cell might not be fertilized yet
Yes, the test can only detect the presence of HCG, after implantation, which takes longer than 2 days
Yes, the test detects the presence of HPL, Human Placental Lactogen
Slide 21 - Quizvraag
Slide 22 - Video
Answer the following questions:
- What are contractions and how do they work?
- When does labor start? - What are the different stages of child-birth?