Reproductive System: pregnancy

Question 1

Foetus

Answer 1

An unborn baby

Question 2

What does a pregnant mother produce for the foetus?

Answer 2

A supply system that nourishes and shields the foetus

Question 3

What does the foetus receive during pregnancy?

Answer 3

Nourishment

Question 4

How does the foetus expel body wastes?

Answer 4

Through an umbilical cord connected to the placenta

Question 5

Placenta

Answer 5

A network of blood vessels implanted in the lining of the uterus

Question 6

Amniotic sac

Answer 6

A bag of fluid

Question 7

Function of the amniotic sac

Answer 7

Protects the foetus against jolting

Question 8

What does a mucus plug do?

Answer 8

Seals the cervix and guards the foetus against infection from entering from the vagina

Question 9

Vagina (in the context of pregnancy)

Answer 9

A birth canal

Question 10

Conception

Answer 10

Fertilisation of an ovum

Question 11

What begins developing hours after conception?

Answer 11

Amniotic sac, placenta and umbilical cord

Question 12

How many weeks does pregnancy last?

Answer 12

40 weeks

Question 13

When is pregnancy counted from?

Answer 13

From the first day of the last menstrual period

Question 14

Pregnancy: weeks 2-3

Answer 14

After ovulation and fertilisation, the ovum becomes implanted in the uterus wall

Question 15

Pregnancy: week 4

Answer 15

The fertilised egg develops basic structures

Question 16

By week 4, what is the fertilised egg called?

Answer 16

An embryo

Question 17

Pregnancy: week 5

Answer 17

The embryo is 2mm long. It has a bulge, a middle with a simple heart, and a tail

Question 18

Bulge

Answer 18

A future head with embryonic brain

Question 19

Pregnancy: week 6

Answer 19

The embryo is 6mm long, with limb buds, and rudimentary (basic) chest and abdomen

Question 20

Pregnancy: week 7

Answer 20

The embryo is 1.3mm long, with limbs, the beginnings of ears, eyes, intestines, kidneys, liver, lungs, mouth, nostrils, and nervous system

Question 21

Pregnancy: week 9

Answer 21

The embryo is 3cm long and weighs 2g. It has immature internal organs and rudimentary fingers and toes

Question 22

Pregnancy: week 11

Answer 22

The embryo is 5.5cm long and weighs10g. It has obvious facial features, a rounded head, and internal ovaries/testes

Question 23

Pregnancy: week 12

Answer 23

The foetus is 9cm long and weighs 14g. Obviously human and the rounded head is less tucked forward against the chest.
Inner ears, eyes and most main internal organs incl. the heart are now completely formed. Blood circulates around the foetal body. Limbs lengthen and now have wrists + ankles + well-defined fingers and toes.

Question 24

Pregnancy: week 16

Answer 24

The foetus is 18cm long and weighs 113g. Emphasis shifts from development to growth. Limbs have well developed joints + muscles, hair appears, and the foetus is now obviously m/f.

Question 25

Pregnancy: week 20

Answer 25

The foetus is 25cm and weighs 340g. Eyebrows, nails, and nipples form, and **foetus moves about inside the womb**. Its heartbeat can only be heard by a stethoscope

Question 26

Pregnancy: week 24

Answer 26

The foetus is 33cm long and weighs 623g. Lack of subcutaneous fat gives **skin a wrinkled appearance.** Downy body hair appears. Limb muscles are strong but lungs are immature. (some babies born now will survive)

Question 27

Pregnancy: week 26

Answer 27

The fast - growing foetus assumes body proportions close to a full-term newborn infant's

Question 28

Pregnancy: week 28

Answer 28

The unborn baby is 38cm long and weighs 907g. The torso's growth rate has sped up. **Eyes are open and the baby moves energetically**

Question 29

What protects the baby against waterlogging by amniotic fluid in week 28 of pregnancy?

Answer 29

Greasy white vernix covering the skin

Question 30

Pregnancy: week 32

Answer 30

The unborn baby is 43cm long and weighs 1.8kg. Head-body proportions approach a full-term baby's, and lungs are well developed. **The baby turns upside-down in the womb**

Question 31

Pregnancy: week 36

Answer 31

The unborn baby is 46cm long and weighs 2.38kg. Fat desposition makes the **body more rounded and skin less wrinkled.** Fingernails are growing, and (in boys) the testes may descend into the skin bag called the scrotum

Question 32

(in boys) skin bag (pregnancy)

Answer 32

Scrotum

Question 33

Pregnancy: week 40

Answer 33

At birth a typical baby is about 50.8cm long and weighs 3.18g. It has smooth skin and a rounded body and has **lost the downy hair** it had before during foetal growth

Question 34

Lanugo

Answer 34

The downy hair once covering a large part of the body of the foetus

Question 35

When does birth occur (dates)

Answer 35

Up to two weeks before or after the predicted date

Question 36

Difference between newborn boys and girls

Answer 36

Newborn boys are often longer and heavier than newborn girls