Studied by 6 peopleurethra
The tube, which the sperm live the penis
penis
release of urine and or sperm
prostate gland
The male gland that adds fluid to nourish the sperm
sperm tube
transports sperm from testes to urethra
Scrotum/scrotum sac
insures that sperm is kept at temperature lower than 37.5°
Testes
production of sperm
fallopian tube / oviduct
carries eggs ( ova) from the ovary to the uterus
uterus womb
foetus will develop if pregnancy occurs
ovary
produces eggs (ova)
Cervix
opening of the uterus
Vagina
sperm is deposited during sex
gametes
Over and sperm cells are gametes or sex cells
What process are sperm cells produced?
Meiosis
What hormone influences sperm production?
Testosterone
Where are sperm cells produced?
Testes
How many chromosomes are present in sperm and egg cells?
23
What are sperm cells specialised for carrying out their function
tail/flagollum, and small, motile
How are egg cells specialised for carrying out their function?
They are large and food is reserved
Where do both cells meet?
Oviduct/fallopian tube
Name the process which occurs when haploid sperm cell and haploid egg cell meet to form diploid zygote
Fertilisation
What is a cell that is produced when they meet
Zygote
how many chromosomes does a zygote have?
46
What happens to a diploid once it has been produced
It travels down the oviduct and becomes embedded in uterus lining
what must a developing embryo have
Oxygen and digested food
How are digested food and oxygen obtained?
placenta
What is an amnion
Protective membrane
During pregnancy, what passes from the mother to the fetus
oxygen glucose
what does the umbilical vein do?
Carries oxygen and glucose from maternal circulation to fetus/embryo
What does umbilical artery do?
Carrie urea, CO2, another waste back up to maternal circulation
What are the three types of contraception?
Mechanical, chemical and surgical
What is female sterilisation?
oviducts are cut oviducts can’t travel through oviduct
what are three ethical issues surrounding IVF
Discarding excess embryos
Not affordable
Bypassing, natural method of contraception
Creation of life in the lab
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
How long does the menstrual cycle last
28 days
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)
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.
What is a haploid?
A cell or nucleus with half the normal number of chromosomes
Note
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