Biology reproduction

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37 Terms

1

urethra

The tube, which the sperm live the penis

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2

penis

release of urine and or sperm

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3

prostate gland

The male gland that adds fluid to nourish the sperm

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4

sperm tube

transports sperm from testes to urethra

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5

Scrotum/scrotum sac

insures that sperm is kept at temperature lower than 37.5°

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6

Testes

production of sperm

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7

fallopian tube / oviduct

carries eggs ( ova) from the ovary to the uterus

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8

uterus womb

foetus will develop if pregnancy occurs

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9

ovary

produces eggs (ova)

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10

Cervix

opening of the uterus

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11

Vagina

sperm is deposited during sex

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12

gametes

Over and sperm cells are gametes or sex cells

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13

What process are sperm cells produced?

Meiosis

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14

What hormone influences sperm production?

Testosterone

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15

Where are sperm cells produced?

Testes

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16

How many chromosomes are present in sperm and egg cells?

23

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17

What are sperm cells specialised for carrying out their function

tail/flagollum, and small, motile

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18

How are egg cells specialised for carrying out their function?

They are large and food is reserved

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19

Where do both cells meet?

Oviduct/fallopian tube

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20

Name the process which occurs when haploid sperm cell and haploid egg cell meet to form diploid zygote

Fertilisation

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21

What is a cell that is produced when they meet

Zygote

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22

how many chromosomes does a zygote have?

46

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23

What happens to a diploid once it has been produced

It travels down the oviduct and becomes embedded in uterus lining

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24

what must a developing embryo have

Oxygen and digested food

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25

How are digested food and oxygen obtained?

placenta

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26

What is an amnion

Protective membrane

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27

During pregnancy, what passes from the mother to the fetus

oxygen glucose

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28

what does the umbilical vein do?

Carries oxygen and glucose from maternal circulation to fetus/embryo

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29

What does umbilical artery do?

Carrie urea, CO2, another waste back up to maternal circulation

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30

What are the three types of contraception?

Mechanical, chemical and surgical

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31

What is female sterilisation?

oviducts are cut oviducts can’t travel through oviduct

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32

what are three ethical issues surrounding IVF

Discarding excess embryos

Not affordable

Bypassing, natural method of contraception

Creation of life in the lab

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33

I what are for common fertility problems

Complications of STDs

Lining of the uterus to thin for implantation to occur

Impotence in males

Blocked/twisted ovaries

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34

How long does the menstrual cycle last

28 days

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35

What happens in the first 4 to 5 days of the cycle?

The thick spongy lining breaks down and passes out of the uterus along with the unfertilised ovum (menstruation)

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36

what happens at D 14 of the menstrual cycle

Ovulation occurs when an ovum is released The ovum travels along the oviduct towards the uterus lining of the universe continues to grow until day 28.

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37

What is a haploid?

A cell or nucleus with half the normal number of chromosomes

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