Unit 4.1-A summary of all topics covered in this topic with detailed notes and labelled diagrams, covers reproductive organs, spermatogenesis, oogenesis, the menstrual cycle, fertilisation, birth, lactation, the placenta and the umbilical cord.
Sacwhichholdsandprotects testesEnablestemperatureoftestes
toremain justbelowbodytempastheirexternal at35CThisis the
guy optimum temperature
forthe enzymesusedinsperyonggadigtion
malehormone testosterone
Testes Inofeesetggetesand
nottesticles f
Spermare storedhereaftertheyareproducedinthetestes
Epididymis
tubeofmusclewhichcarries tothe urethra
F
Vasdeferens y
Egg
eminalvesicle Producesandsecretes a fluidmade of for
fructose
to
energy and f
to
prostaglandins stimulateuterinecontraction
containsmucustoincreasethemobility the
promote pregnancy Italso
60
of spermThisfluidmakesup
ofsemen sofluid sperm
t
Addsan alkalinefluidtothesemenwhichneutraliseacidin the
urethra
Prostate gland
andprotects in naturally acidic environmentinthevagina D
Egg
Carriessemen throughthe
Urethra
fromthebladdertothepenisandoutthebody
of
penisandout thebodyAlsocarries urine
Tenis Releasessemenand
of
urineBecomeserectduetoincreasedblood flowasfull blood
vesselsanddeliverssementothe
of
top thevaginaduringejaculation
, fallopian
tubes
uterus
endometrium ovaries
cervix
vagina
siteofoogenesisEggs are producedhere aswell as oestrogengygperggesteroney
ovaries
Fallopiantubes
IEggenggq.gg e taI ishaatn
it
gated ingiaresottaeatafmBirmaet
fertilisedinthefallopiantubes
The
egg isusually
Hollow muscularorganlinedbytheendometrium which is a mucusmembranecontaining
manybloodvesselsTheembryoimplantshereduringpregnancy Itgrowsto a thick
Ventegumsenaynd
bloodrichtissueduringthemenstrualcycle
whichisthenshedandlost
is nofertilisation if
duringa period there
cervix Thevaginaiswherespermisdepositeditleadstothe
Vagina and cervix.Thisis a
ring at
muscle the
of
to
opening the It
uterus keepsthingsbabies
inSpermmust
swim through the cervixtoreachthe
fallopiantube Amucous
egginthe
bacteria
whichprevents
plug formsduringpregnancy
or pathogensfromentering containsLactobacillus whichsecreteslactic
Inbetweenpubertyandmenopausethe vagina
inhibits
acidandmaintains a lowpHwhich thegrowthof
other microbes
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