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Science > Biology and Genetics > Flashcards

Biology and Genetics Flashcards

1
Q

Ovaries

A

Stores and releases eggs

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2
Q

Fallopian tube

A

Carry the egg to the uterus,fertilisation occurs here

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3
Q

The unterus

A

Is where the the fertilised egg becomes implanted and finds nourishment

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4
Q

The cervix

A

Leads from the vagina to the uterus

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5
Q

The vagina

A

Holds the male penis during sexual intercourse

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6
Q

Ovulation

A

An egg is releases through the ovary and average of every 28days

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7
Q

The egg is released

A

Every 13-15 days of the menstrual cycle

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8
Q

Menstuation/period

A

The lining and a small amount of blood pass through the vagina

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9
Q

Fertile period

A

These are the days of the menstrual cycle when the women is most likely to get pregnant.

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10
Q

Menopause

A

Signals the end of a females ability to reproduce and also the end id her menstrual cycle.it happens at different ages for people.typically late 40s to early 50s.

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11
Q

The testes

A

Produce spearm

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12
Q

The scrotum

A

Is where the testes are,it is located outside the body to ensure the temperature is lower than the body temperature for healthy spearm

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13
Q

The epididymis

A

Is a coiled tube on the outside of each testis that stores sperm and allows them to mature fully.

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14
Q

The vas deferens

A

Brings the sperm from the testes to the penis

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15
Q

The seminal vesicles,prostate gland and cowper’s gland

A

Produce seminal fluid which mixes with sperm to form semen,it nourishes the sperm and allow them to swim

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16
Q

The penis

A

Enters the female and ejaculates semen

17
Q

Puberty

A

Describes when a body starts becoming sexually mature.it normally happens between the age of 10 to 16

18
Q

Male puberty

A

In males,sex hormones are released causing the voice to deepen,hair grows around the sex organs,face,chest,and underarm,the testes and penis grows bigger and start to produce sperm

19
Q

Female puberty

A

In females when the sex hormones are released the breasts develop,hips widen,and hair begins to grow on the body

The first egg is released from the ovaries which leads to the opening period

An egg will be released every mother until the menopause

20
Q

During intercouse the mans

A

Penis fills with blood and becomes hard enough to be placed inside the vagina
A mixture of sperm cells and seminal fluid called semen is released into the vagina
The semen swim up the uterus and into the fallopian tubes.

21
Q

Fertilisation

A

If an egg is present in the
fallopian tube, and a couple have sexual
intercourse, then one of the sperm cells
may fuse with it

22
Q

Fertilised egg

A

The nuclei of the sperm and egg fuse together to form a fertilised egg

23
Q

Stages of development

A

Zygote-) embryo-)foetus

24
Q

Embryo

A

which attaches to the lining of
the uterus (implantation) grows more, and
after 8 weeks looks like a human

25
Q

amniotic fluid

A

As the embryo develops in the uterus it is
protected inside a bag of fluid called
amniotic fluid.

26
Q

Pregnancy

A

The average pregnancy is 40weeks

27
Q

umbilical cord

A

A tube called the umbilical cord joins the
embryo to the placenta

28
Q

placenta

A

• The placenta is rich in blood vessels
• It is here at the placenta that food and
oxygen from the mothers blood pass into
the baby’s blood
• Also wastes such as Carbon dioxide pass
from the baby’s blood into the mothers

29
Q

labour

A

The birth of a baby begins when the uterus
muscles start to contract
• This is called labour

30
Q

waters
break”

A

The bag of amniotic fluid bursts “waters
break” and further contractions push the
baby out usually head first, through the
vagina

31
Q

lactation.

A

The production of breast milk is called
lactation.

32
Q

colostrum

A

• The first three days of milk is called
colostrum– very nutritious, and helps
protect the baby from infection

33
Q

Genetics

A

is the study of the
inheritance of Characteristics

34
Q

Inheritable characteristics

A

Many
physical characteristics such as eye colour
and shape of ears were inherited from
your parents

35
Q

Chromosomes

A

The nucleus of each sex
cell (gamete) contains 23 thread like
structures called Chromosomes

36
Q

• Chromosomes are made of

A

protein +
DNA. These chromosomes carry genes

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