Conception, Fertilisation and Pregnancy

Question 1

Conception

Answer 1

-While in the Fallopian tube, the egg is penetrated by the sperm
-it divides into two cells then continues to divide rapidly in a process called mitosis
- it divides into distinct sections (the embryo, the umbilical cord, the placenta and the amniotic sac)
- the blastula attaches to the endometrium (womb lining) in a process called implantation
The endometrium sends hormones that trigger the changes that will prepare the mother’s body for pregnancy and the birth of the baby.

Question 2

The first trimester

Answer 2

Roughly three months long
Period of rapid development for the foetus
- begins to develop nervous system and internal organs
- begins to develop bones and the like
- by end of trimester is a recognisable human form
Large emotional and physical changes for the mother are experienced
- weight gain
- fatigue, light-headedness, nausea, swollen or tender breasts, increased frequency of urination might be experienced

Question 3

The second trimester

Answer 3

Roughly 3 months long
Woman will put on weight and a pronounced bump of pregnancy will develop.
Baby:
- will begin to move around
- will sleep and wake
- can hear
- will pass urine
- develops fingernails and hair
- heart beat is audible through a stethoscope
- developing lungs
- now weighs about half a kilo and is 20 - 30 cm long

Question 4

The third trimester

Answer 4

Roughly 3 months
Uncomfortable for mothers (heavy, compressing organs, back pain, insomnia, cramps, ect.)
Foetus gains weight and size
Can now open eyes, sucks thumb ect.

Question 5

Importance of placenta and umbilical cord

Answer 5

They are what give the baby it’s nutrients. They keep the baby alive. The placenta is the connection of the umbilical cord to the lining of the womb. The umbilical cord goes to the baby and carries nutrients to it.