Vim li cas gubernaculum tseem ceeb?

Cov txheej txheem:

Vim li cas gubernaculum tseem ceeb?
Vim li cas gubernaculum tseem ceeb?
Anonim

Lub gubernaculum zoo li yog qhov tseem ceeb tshaj plaws anatomical qauv nyob rau hauv lub testicular migration txheej txheem, los ntawm txhais tau tias ntawm contraction thiab shortening , yog li imposing traction zog ntawm lub testis (1. keeb kwm tshuaj xyuas txog kev xav ntawm lub cev xeeb tub.

Dab tsi yog qhov tseem ceeb ntawm gubernaculum?

Caudally lub genito-inguinal ligament, lossis 'gubernaculum', txuas tus ncej qis ntawm gonad thiab epididymis mus rau yav tom ntej inguinal kwj dej. Lub gubernaculum yog li ntawd-npe los ntawm John Hunter nyob rau hauv lub kaum yim caug xyoo vim nws xav tias nws steered testis rau lub scrotum.

Tib neeg puas muaj gubernaculum?

Txoj kev tshawb no ntawm 178 tus txiv neej fetuses thiab me nyuam mos qhia tau hais tias qhovntsej thiaj tsis mob ntawm cov qog los ntawm cov kwj dej inguinal yog cov txheej txheem ceev, nrog rau 75% ntawm cov noob qes nqis los ntawm 24 thiab 28 lub lis piam ntawm cev xeeb tub. Lub gubernaculum yog ib lub cylindrical, gelatinous qauv txuas nrog cranial mus rau lub testis thiab epididymis.

Vim li cas cov noob qes tseem ceeb?

Testicular qhovntsej thiaj tsis mob yuav tsum tau rau cov spermatogenesis ib txwm, uas yuav tsum tau 2 ° C mus rau 3 ° C txias scrotal ib puag ncig. Embryonic testicular qhovntsej thiaj tsis mob tuaj yeem muab faib ua peb theem: 1. Transabdominal migration ntawm testis mus rau lub nplhaib inguinal.

Yuav ua li cas tswj kev loj hlob ntawm gubernaculum?

Muaj peev xwm koom nrog hauv kev txhim kho gubernaculum yog androgens, anti-MüllerianCov tshuaj hormones (AMH), thiab cov tshuaj insulin zoo li (Insl3). … Ntxiv mus, Amh-/-, Amh+/-, thiab Insl3+/- testes txhawb kev loj hlob ntawm gubernacular explants mus rau tib yam li tswj testes.

Pom zoo:

Nthuav cov khoom
Puas yog sind walkie talkies?
Nyeem ntxiv

Puas yog sind walkie talkies?

A walkie-talkie, ntau lub npe hu ua handheld transceiver, yog ib lub tes tuav, portable, ob-txoj kev xov tooj cua transceiver. Nws txoj kev loj hlob thaum Tsov Rog Ntiaj Teb Zaum Ob tau ua ntau yam rau Donald Hings, xov tooj cua engineer Alfred J.

Puas tau tilapia thiab koi nyob ua ke?
Nyeem ntxiv

Puas tau tilapia thiab koi nyob ua ke?

Puas yuav muaj teeb meem nrog kev sib xyaw hom? Yog, Tilapia tuaj yeem nrog Koi; Txawm li cas los xij, zoo ib yam li kev sib xyaw ntawm Tilapia thiab Bass, cov neeg cog qoob loo yuav tsum tau cais cov tsiaj me los ntawm cov neeg laus kom tsis txhob noj cov ntses yau.

Can ick guard tua ntses?
Nyeem ntxiv

Can ick guard tua ntses?

Cov tshuaj ick no tua tag nrho kuv cov ntses ib hmos, suav nrog betta, guppies thiab octos. Kuv txawm siv ib nrab koob tshuaj kom nyob rau sab nyab xeeb. … Kuv pom tias thaum tsuas yog betta muaj 3 qhov chaw thiab maj mam khawb nws lub cev ib ntus ntawm no thiab qhov ntawd, yog thaum kuv pom.