Psychology 2075 Lecture Notes - Lecture 5: Prostaglandin, Bisexuality, Congenital Adrenal Hyperplasia

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HumanSexualityLecture5Anatomy&PhysiologyPart2
Testes
● MaleGonads&sexorgans
● Function:
oSpermatogenesis>Producesperm(germcell)
Heatlowersspermcount
Menusetodipitinboilinghotwatertostopcontraception
oProducesexhormone
Testosterone(androgen)
Responsibleforsecondarysexcharacteristics
Polyorchidism=morethan2testicles

TestesandSpermaticCord
● Testicledividedintolobes
● Containinterstitialcells
● Lobescontainseminiferoustubules
● Spermstoredinepididymis
● Eggandspermqualitydodecrease
● Emptyintovasdeferens
oChannelforsperm
oCutduringvasectomy
● Spermaticcordcontains(Understandthispoint)
oVasDeferens
oBloodVessels
oNerves
oCremastermuscle
Functionsindrawingthetestesclosetobody

Lookout,I'mswimming!
● Don’tplacelaptoponlapitcandecreasesperm
● Spermatagonium
oMostimmature
● Spermatocyte
● Spermatid
Spermatozoan(sperm)
oHeadpiecehasenzymesthatburyinovum
oMidpieceenergyofsperm
oTailmobility
oGeneticmaterialinheadofsperm

Semen
● =sperm(1%)+fluidsfrom:
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SeminalVesicles(70%)
ProstateGland(30%)
● Cowper’sGlands
● 50150millionsperm/ml—whysomany??

● Whitishfluid
● Water,sugar,mucous,acids,andbases*Shieldspermfromvaginalacidity
● 12teaspoons
● Garlic–cigcanmakeitsharp
● Foodcanchangehowittastes
● Tasteofsemen?
● Antidepressantqualities??
oCertainproteinslikeserotonin

Seminal  
● 2saclikestructures
● Aboveprostate,behindbladder,infrontofrectum
● Produce6070%ejaculate
● Nutritionforspermandtransportofsperm
● VasDeferensmeetsSeminalVesiclestoformejaculatoryduct(asitpassesthrough
prostate)
● Thenductmergesontourethraforexit

ProstateGland
● Belowbladder;sizeandshapeofchestnut
● Secretesamilkyalkalinesubstancethatformspartofejaculate
● Produces3040%semen
● Stimulationheightensarousalandpleasure
○ Akintomalegspot
○ Prostatemightbepronetocancer
 
Cowper’sGlands
● AkaBulbourethralGlands(2peasizedglands)
● Belowprostate(located)
● Emptysecretionsintourethrawhichneutralizesandcreatespathwayforspermand
providesprotectionandsincesemenalsopassesthroughitsacidic
● Fluidcomesbeforeejaculateandcontainsviablesperm
● Cleanandlubricateurethraforpassageofsperm
● Bufferacidityofurethra
● Clearpreejaculate–chancesarelow
● Lifespanofsperm:5days

MaleSexualHealth
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Andropause 
● Testosteronedecreaseby1%eachyearpast40
● Occursin70s–80s
● Sexdrive,intensity,etc
○ Knowdifferenceofmenopauseandandropause
 
Cryptorchidism 
● Testesfailtodescend;35%ofmaleinfants
○ Testesdescendearlyindevelopment,somemaynotandstayatscrotum,
inguinalcanalorabdominal
● Roleofpthalates?
○ Chemicalfoundinhouseholdproducts
○ Earlychildhood,couldstopyoufromhavingchildren

TesticularTorsion
● Twistingofatestisonitsspermaticcord
○ Cremastermuscle,nerves,bloodvessels
○ Twistingcausesnotenoughbloodornutrientsandifyoucutoffbloodflow,itcan
die
● Severepainandnausea
○ Gointoshock

Peyronie’sDisease
● 1%ofmenexperiencepainfulcurvaturemakingpenetrationimpossible
oChangeinconnectivetissue
oIferect,itpullsandcreatecurves
oGoesawayonitsowninayearor2
oWaystocorrectthisbutrecurrencesarepossible

SteroidUse?
● Shrinkageoftesticles,erectiledysfunction,shortstature

SexHormones
Hormones
● Substancesproducedbyendocrineglands
● Secreteddirectlyintobloodstream
● Effects:
○ Whichglandsareweinterestedin?
● Sexglands(gonads)
oTestes
Releasetestosterone
oOvaries
Productionofestrogen
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