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Biology > Human Reproduction And Genetics > Flashcards

Human Reproduction And Genetics Flashcards

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1
Q

Testes

A

Produce sperm

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2
Q

Sperm duct

A

Brings the sperm form the testes to the penis

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3
Q

Glands and vesicles

A

Produce seminal fluid which mixes sperm to form semen

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4
Q

Penis

A

Enters the female and ejaculates semen

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5
Q

Gamete

A

A sex cell

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6
Q

Male gamete

A

Is the sperm

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7
Q

Female gamete

A

Egg/ovum

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8
Q

Ovulation

A

An egg is released from the ovary an average of every 28 days

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9
Q

Menstruation or period

A

When blood comes out of the vagina (day 1-5)

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10
Q

Fertile period

A

These are the days of the menstrual cycle when the woman is most likely to become pregnant

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11
Q

Puberty

A

When the body starts becoming sexually mature

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12
Q

Copulation

A

Sexual intercourse

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13
Q

Fertilisation

A

The fusing of the gametes to form a zygote

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14
Q

Zygote

A

Egg and sperm fuse to form a single cell

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15
Q

Embryo

A

Division of the zygote occurs and it grows. Attaches to the lining of the uterus

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16
Q

Foetus

A

After 8 weeks looks like a human

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17
Q

Implantation

A

Occurs when the fertilised egg lodges itself on the lining of the uterus

18
Q

Length of human pregnancy

A

40 weeks

19
Q

Embryo develops in the uterus it is protected in a bag of fluid called

A

Amniotic fluid

20
Q

Umbilical chord

A

A tube joining the embryo to the placenta

21
Q

Placenta

A

Food oxygen wastes and carbon dioxide are swapped between the mother and baby .blood does not mix

22
Q

Family planning

A

Plan how many children you will have

23
Q

Natural methods or contraception

A

Aim to detect the day ovulation takes place and avoid intercourse during the fertile period

24
Q

Artificial methods of contraception

A

Prevent the sperm and egg meeting e.g. Condom

25
Q

Abstain

A

Only to avoid pregnancy is to not have sexual intercourse

26
Q

Responsible attitude to sexual intercourse

A

Could use condoms and another form of contraception e.g. A pill to avoid pregnancy and spread or disease

27
Q

A women is most likely to become pregnant during the middle of her menstrual cycle

A

That is when the egg is released

28
Q

Sperm are not formed if the testes are located inside the male body

A

The sperm needs to be cooler properly

29
Q

During pregnancy the woman does not have a period

A

The lining of the womb acts to nest the baby, and stays inside

30
Q

A baby in the womb does not breath through its lungs

A

Oxygen is passed through the placenta to the umbilical chord

31
Q

If a pregnant woman smokes or Drinks her baby may be harmed

A

Everything that the mother eats goes into the placenta

32
Q

Breastfeeding fed babies tend to get fewer infections than bottle fed babies

A

Baby will be used to the mothers immune system and will get a lend of her ability to fight off infection until their own system is made

33
Q

A placenta is essential for the development of a baby

A

Food and oxygen pass form the placenta along the umbilical chord

34
Q

Sperm have tails

A

Need to swim to the egg

35
Q

Genetics is

A

The study of the inheritance and characteristics

36
Q

Chromosomes

A

The nucleus of each sex cell contains 23 thread like structures called

37
Q

Chromosomes are made

A

Of protein and DNA

38
Q

Genes

A

Are chemicals found on chromosomes that pass on information from parents to children

39
Q

DNA

A

Deoxyribonucleic acid

40
Q

Human body cells have 23 pairs of chromosomes

A

One set comes from the mother the other from the father.each sex cell has 23 chromosomes

Biology (9 decks)

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