Qhov sib txawv tseem ceeb ntawm cov tubules seminiferous thiab Leydig hlwb yog cov tubules seminiferous yog qhov chaw ntawm phev synthesis, maturation thiab kev thauj mus los hauv cov txiv neej kev loj hlob system thaum Leydig hlwb yog cov hlwb nyob rau hauv interstitial qhov chaw uas tsim thiab secrete txiv neej pw. Cov tshuaj hormone testosterone.
Cov txiv neej kev ua me nyuam muaj ntau qhov sib txawv. Testis lossis testicle yog ib qho ntawm cov qauv tseem ceeb ntawm nws. Nws tsim cov txiv neej gametes los yog phev thiab secretes poj niam txiv neej hormone. Testis muaj cov raj coiled heev hu ua seminiferous tubules. Seminiferous tubules muaj txog li 90% ntawm cov testis. Cov tubules no yog qhov chaw ntawm cov phev ntau lawm, maturation thiab tsheb thauj mus los. Leydig hlwb yog cov endocrine Cheebtsam ntawm testis uas secrete testosterone, uas yog cov txiv neej cov tshuaj hormones. Leydig hlwb muaj nyob rau hauv cov ntaub so ntswg interstitial ntawm testis.
Seminiferous Tubules yog dab tsi?
Seminiferous tubules yog cov txheej txheem coiled heev nyob rau hauv cov txiv neej kev loj hlob. Cov tubules no yog qhov chaw ntawm cov phev ntau lawm, maturation thiab kev thauj mus los hauv lub testis. Structurely, seminiferous tubules yog hais txog 150-300 µm nyob rau hauv lub cheeb thiab 30-80 cm ntev. Lawv kuj yog ib puag ncig los ntawm basal lamina. Yog li ntawd, basal lamina ua hauj lwm raws li ib tug barrier ntawm seminiferous tubules thiab interstitial qhov chaw. Seminiferous tubules yog lined nrog cov hlwb hu ua Sertoli cells. Sertoli cells yog cov kab mob ntev ntev uas txuas los ntawm basal lamina mus rau tubule lumen. Lawv muaj nyob rau hauv lub tubule phab ntsa. Ntxiv mus, seminiferous tubules muaj txiv neej kab mob hlwb.
Daim duab 01: Seminiferous Tubules
Seminiferous tubules tsim cov phev hlwb ntawm meiosis. Cov txheej txheem no yog hu ua spermatogenesis, thiab nyob rau hauv cov txheej txheem no, cov txiv neej cov kab mob tsis paub tab hloov mus rau hauv cov phev laus. Sertoli hlwb muab txhua yam thiab kev txhawb nqa rau spermatogenic hlwb.
Leydig Cells yog dab tsi?
Leydig cells lossis interstitial cells yog cov hlwb uas muaj nyob hauv qhov chaw nruab nrab ntawm qhov testis. Qhov tseeb, lawv nyob hauv cov ntaub so ntswg uas nyob ib puag ncig cov tubules seminiferous. Lub luag haujlwm tseem ceeb ntawm Leydig hlwb yog cov synthesis thiab tso tawm ntawm cov txiv neej pw ua ke hormone: testosterone. Yog li, Leydig hlwb yog cov endocrine tivthaiv ntawm testis. Testosterone hormone yog lub luag haujlwm rau kev tswj hwm cov yam ntxwv ntawm kev sib deev theem nrab. Tsis tas li ntawd, nws yog lub luag haujlwm rau kev loj hlob thiab kev saib xyuas ntawm cov hlwb ntawm cov kab mob epithelium. Lwm yam tshaj li testosterone, Leydig hlwb kuj tso androstenedione thiab dehydroepiandrosterone (DHEA), uas yog androgens.
Daim duab 02: Leydig Cells
Leydig hlwb yog polyhedral epithelial hlwb uas muaj qhov sib txawv ntawm qhov loj. Lawv muab los ntawm capillaries. Tsis tas li ntawd xwb, lawv muaj cov nucleus sib txawv.
Dab tsi yog qhov zoo sib xws ntawm Seminiferous Tubules thiab Leydig Cells?
- Seminiferous tubules thiab Leydig hlwb yog ob yam ntawm testis ntawm txiv neej reproductive system.
- Leydig hlwb pom nyob ib sab ntawm cov tubules seminiferous.
- Ob leeg tseem ceeb rau spermatogenesis.
- Basal lamina cais Leydig hlwb ntawm seminiferous tubules.
Qhov txawv ntawm Seminiferous Tubules thiab Leydig Cells yog dab tsi?
Seminiferous tubules yog ib lub network ntawm cov hlab ntsha uas ua haujlwm raws li qhov chaw rau kev tsim cov phev, kev loj hlob thiab kev thauj mus los hauv cov txiv neej kev ua me nyuam. Leydig hlwb lossis cov hlwb interstitial yog cov hlwb uas ua ke thiab zais cov testosterone. Yog li, qhov no yog qhov sib txawv tseem ceeb ntawm cov tubules seminiferous thiab Leydig hlwb. Ntxiv mus, seminiferous tubules nyob rau hauv lub testis, thiab lawv suav rau 90% ntawm testis. Tab sis, nyob rau hauv sib piv, Leydig hlwb muaj nyob rau hauv lub interstitial qhov chaw ntawm lub testis. Dhau li ntawm, structurally, seminiferous tubules yog ib tug network ntawm cov hlab, thaum Leydig hlwb yog polyhedral zoo li lub hlwb.
Cov hauv qab no infographic ntawm qhov sib txawv ntawm seminiferous tubules thiab Leydig hlwb qhia ib sab los ntawm kev sib piv ntawm seminiferous tubules thiab Leydig hlwb.
Summary – Seminiferous Tubules vs Leydig Cells
Seminiferous tubules thiab Leydig hlwb muaj nyob rau hauv testis ntawm tus txiv neej reproductive system. Seminiferous tubules yog lub luag haujlwm rau kev tsim khoom, kev loj hlob thiab kev thauj mus los ntawm cov phev thaum Leydig hlwb yog lub luag haujlwm rau kev tsim thiab tso tawm ntawm cov txiv neej pw ua ke hormone testosterone. Yog li, qhov no yog qhov sib txawv tseem ceeb ntawm cov tubules seminiferous thiab Leydig hlwb.
