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Flashcards in reproduction Deck (49):
1

adolescence

the period of time when a child changes into an adult

2

puberty

the physical changes that take place during adolescence

3

sex hormones

these are chemical messengers that travel around your body in the blood. female sex hormones are made in the ovaries. male sex hormones are made in the testes

4

sperm cell

a cell containing male genetic material

5

testes

produce sperm and male sex hormones

6

scrotum

the bag of skin that holds the testes

7

semen

fluid containing sperm

8

sperm duct

tube that carries sperm from the testes to the penis

9

urethra

tube that carries urine or sperm out of the body

10

penis

the structure that carries sperm and semen out of the body

11

sexual intercourse

the process where the penis releases semen into the vagina

12

egg cell

a cell containing female genetic material

13

ovary (human)

contains egg cells

14

oviduct

tube that carries an egg to the uterus

15

uterus

where a baby develops until its' birth

16

cervix

the ring of muscle at the entrance to the uterus. It keeps the baby in place while the woman is pregnant

17

vagina

receives sperm during sexual intercourse. This is where the male's penis enters the female's body

18

gamete

reproductive cell, the male gamete is a sperm cell and the female gamete is an egg cell

19

fertilisation

the process where the nucleus of a sperm cell joins with the nucleus of the egg cell

20

cilia

tiny cells on the surface of cells

21

ejaculation

when semen is released from the penis

22

embryo

a ball of cells that forms when the fertilised egg divides

23

implantation

the process where an embryo attaches to the lining of the uterus

24

fetus

the name given to an unborn baby from eight weeks of development

25

placenta

the organ where substances pass between the mothers and the foetus's blood

26

umbilical cord

connects the fetus to the placenta

27

fluid sac

contains fluid, acts as a shock absorber, protecting the fetus

28

period

loss of uterus lining through the vagina

29

menstrual cycle

the monthly cycle during which the uterus lining thickens and then breaks down and leaves the body if an egg is not fertilised

30

ovulation

the release of an egg from the ovary

31

contraception

the method of preventing pregnancy

32

condom

a barrier method of contraception which prevents semen being released into the vagina

33

contraceptive pill

a chemical method of preventing pregnancy

34

petal

the brightly coloured part of a flower that attracts insects

35

sepal

the special leaves found under the flower which protect unopened buds

36

stamen

the male reproductive part of a flower

37

anther

the part of the flower that produces pollen

38

pollen

the male gamete of a plant

39

filament

the part of the flower that holds up the anther

40

carpel

the female reproductive part of the flower

41

stigma

the part of the flower that is sticky to catch grains of pollen

42

style

the part of the flower that holds up the stigma

43

ovary (plant)

the plant of the flower that contains ovules

44

ovule

the female gamete of a plant

45

pollination

the transfer of pollen from the anther to the stigma

46

fruit

the part of a plant that contains seeds

47

seed

the structure that develops into a new plant

48

germination

the period of time when a seed starts to grow

49

seed dispersal

the movement of seeds away from the parent plant