Summary Matric IEB human reproduction

REPRODUCTION
Theabilityoforganisms toproducea newgenerationofthemselves
newindividualsareproducedfroman already individual
existing

Duringreproduction anorganism'sgenesaretransferredto thenextgeneration Importantforsurvival
evolutionof aspecies



SEXUALREPRODUCTION
eghumanreproduction
ofanewgenerationofthesamespeciesbybringingtogetherthegeneticmaterial
production
tymphreffen
no

messymissis ensuresthatthenucleusor we tied inTi Eer9
Feng
gameteshavehalfthetotalnumberofchromosomesinhumans
eachgametehas23chromosomes referredtoas ahaploidcell n
Femalegametes
eggcells ora fertilisation fusionofnucleusofmale
malegametes spermcells gamete nucleusoffemalegamete
produces a
249 Enromosomes 23fromspermcell 23from cell
egg


schematiccultine of human life cycle




see

,ventralview

fortransportofsperm




iin eEnF
secretes pedimentsticky
a nuid
edteinamikafamdms.at
produce
sugar richauidcructose providesspermwith forma
energy
Araseminalfluidmakes mostofejaculatory
up fluidsemen



E.EE iEE ii I
smallglandsfoundoneither
two
ie
sideofurethra
I
muscular spermduct continuationofepididymis
passes abdominal
through intourethra
cavityopens secretes fluidwhensexuallyaroused
alkalinemucouslike
mature by waves
peristaltic
spermforward strong fromepididymis hmmech urinethat
acidic
neutralises bepresentinurethra
inwallsofducts lubricatesurethra externalmay
pushes
into
u rethra orsmoan
contraction
strong muscle urethralopeningprotects
sperm

5mᵗsaIndianiiiFor
EasterlingEstrien Emigrant
sometime
ifd geeh yap nsp.am
jointoformthishighlyconvolutedtubule
tubules
seminiferous
immature spermenterherewherethey
mature become motile fertile
spermisstoredhere so caneffectivelyfuseerect
they thenucleus the
into ovum
formany months
s
ftp.kg aid1Eeythe iisiibe9
ig
lateralview




the
in tiny Eaglesaesthetetestesareinabdominalcavitydescendbeforebirth

, scrotum Testes
likesaccontainingtestes
pouch
Functions

testes
houses protects

actsasatemperatureregulator
oftwomuscles
because


oh fast testsues
Yanis
smoothmusclecaninner
liningofscrotum
keeptestes2to3C
Functions oftestes
temp
belowbody
vitalforformationoffertile
cellsmale
producesperm gametes 5 1 91or cell
groups endocrine fi egaig
sperm
incoldconditions
up g
qÉÉg JemmiÉ
gnhs
producetestosteronemale
hormones
withgerminalepithelialcells
lined
length250m
total
200
produce 500million
spermforejaculation
produced cellsofLeydig
ftp.Etn
e npmggtetetsYgn8ser
by
vitalroleinspermatogenesis
plays consistsof
manycontinued
stiffens
inwarmconditions see ystandardftp.fctso cubules

striated smoothmuscles
relax testesaresuspended
further
frombody




Penis themalesexorgan
withspermintofemale'svaginaduringcopulationsexualintercourse
depositssemen
spermarebroughtcloserto forfertilisation increaseschanceoffertilisation
egg
middleofthepenis
downthe
Urethrapasses

upof
Made
Shaftofpenis thelengthofthepenisthereare3sectionsoferectiletissue
down
Running
Headofpenis spongytissue
shaped sensitive
cone ondorsalside 2sectionsofcorpuscavernosa
Araglans
penis onventralside 1sectionofcorpusspongiosa
covered
naturallypartially
byforeskin dorsal




Foreskin
theheadofthepenis
protects
sometimesremoved asimple operation circumcision
by
orculturalreasons foreskinistootight
religious ventral