男性生殖生理学-教学课件（非AI生成）.ppt

**阴襄的功能

FunctionsofscrotumOnefunctionofthescrotumistohelpmaintainthetemperaturenecessaryforspermatogenesisbylocatingthetestesoutsideofthebodycavity.维持生精过程所需的温度Thetemperatureinthehumanscrotumis3.1?Clowerthanthenormalwithinthebody.Spermatogenesisrequiresthislowertemperature.人类阴襄的温度较体内温度低3.1度,适合精子生成.*隐睾症CryptorchidtestesInabout3to4%ofmales,thetestesfailtodescendbybirth.Byoneyearofage,about0.8%ofmalesstillhavetesteswithinthepelviccavity,andin0.3%ofcasesthetestsfailtodescendbythetimespermatogenesis.Temperaturedamagewouldoccursinthesecryptorchidtestes.*桑拿是好的生活方式吗?

Hotbathorsauna:agoodlifestyle?Takingahotbathorsaunacanleadtotemporaryproblemswithspermproduction.(可导致生精问题)However,takingaseriesofhotbathisnotareliablecontraceptivemeasure.(用热水浴来避孕不可靠)****影响睾丸功能的其它因素

Otherfactorsthatinfluence

testicularfunction长期应激状态Stress:Longtermstressisknowntoinhibittesticularfunction.AsadrenalhormonesmayinhibittesticularfunctionbysuppressingGnRH,LHandFSHsecretion.*放射性损害RadiationHighlevelsofradioactivitycandestroyspermatogonia,andcauseinfertility.*农药PesticidesPesticideshaveadverseeffectsontesticularfunction*重金属化学物质ChemicalsHeavymetalssuchasmercury,lead,cadmiumcancausecompleteandirreversibleinfertility*合成类固醇AnabolicsteroidsAnabolicsteroids,suchasandrostenedionearetakenbymentoincreasemusclesizeandstrength.*合成类固醇的副作用

SideeffectsofanabolicsteroidsExcessanabolicsteroidscanreduceLHsecretionandleadtotestisshrinkageandinfertility,othersideeffectsincludelivertumors,kidneydisease,heartdisease,andmusclespasms.*ReviewQuestionsDescribethesequenceofeventsleadingfromspermatogoniatosperm.ListfunctionoftheSertolicell.Diagramthehormonalchaincontrollingthetestis.Whatarethefeedback