Puas yog gonads thiab kuaj tib yam?

Cov txheej txheem:

Puas yog gonads thiab kuaj tib yam?
Puas yog gonads thiab kuaj tib yam?
Anonim

txiv neej thiab poj niam muaj gonads. Nyob rau hauv cov txiv neej, lawv yog cov noob qes, los yog cov noob qes, cov qog txiv neej pw ua ke uas yog ib feem ntawm txiv neej txoj kev loj hlob. Lawv nyob tom qab noov nyob rau hauv ib lub hnab ntawm daim tawv nqaij hu ua scrotum. Poj niam gonads, zes qe menyuam, yog ib khub ntawm cov qog.

txiv neej muaj pes tsawg gonads?

Cov qog ua rau poj niam txiv neej tsim nyob rau hauv ib khub ntawm cov kab ntev ntev nyob ib sab ntawm lub mesentery, cov quav quav… Feem ntau khub gonads ntawm vertebrates tsim ob gametes thiab cov tshuaj hormones tsim nyog rau kev yug me nyuam. Qee tus, xws li txiv neej thiab poj niam cov neeg laus cyclostomes, tsuas muaj one gonad.

Puas testes rau txiv neej lossis poj niam?

Testicles (testes)

Cov noob qes yog lub luag haujlwm ua rau testosterone, thawj txiv neej deev tshuaj hormone, thiab tsim cov phev. Hauv cov noob qes yog coiled pawg ntawm cov hlab hu ua seminiferous tubules. Cov tubules no yog lub luag haujlwm tsim cov phev hlwb los ntawm cov txheej txheem hu ua spermatogenesis.

Dab tsi ua rau cov gonads dhau los ua ntshav?

Txiv neej yog tsim los ntawm kev ua ntawm SRY noob ntawm Y chromosome, uas muaj cov cai rau kev tsim cov qe ntshav txiav txim siab protein, uas nyob rau hauv lem ua rau primitive. gonads los ua testes.

gonad txhais li cas?

: ib lub qog ua me nyuam (xws li lub zes qe menyuam lossis qe qe) uas tsim gametes. Lwm cov lus los ntawm gonad Piv txwvKab lus Kawm Ntxiv Txog gonad.

Pom zoo:

Nthuav cov khoom
Koj puas tuaj yeem mus ntsib dagestan?
Nyeem ntxiv

Koj puas tuaj yeem mus ntsib dagestan?

Dagestan, officially lub koom pheej ntawm Dagestan yog ib lub koom pheej ntawm Russia nyob rau hauv lub Caspian Hiav txwv, nyob rau hauv lub North Caucasus ntawm Eastern Europe. Nws nyob rau sab qaum teb ntawm Greater Caucasus, thiab yog ib feem ntawm North Caucasian Federal District.

Xab npum suds siv rau dab tsi?
Nyeem ntxiv

Xab npum suds siv rau dab tsi?

A xab npum suds enema yog ib txoj hauv kev kho cem quav. Qee tus neeg kuj siv nws los kho fecal incontinence lossis tshem lawv cov quav ua ntej kev kho mob. Thaum muaj ntau hom enemas, xab npum suds enema tseem yog ib qho ntawm ntau hom, tshwj xeeb tshaj yog rau cem quav.

Puas yog qhov kev xeem thib ob?
Nyeem ntxiv

Puas yog qhov kev xeem thib ob?

Qhov thib ob derivative yuav yog siv los txiav txim siab hauv zos extrema ntawm kev ua haujlwm raws li qee yam xwm txheej. Yog tias qhov kev ua haujlwm muaj qhov tseem ceeb rau qhov twg f′(x)=0 thiab qhov thib ob derivative yog qhov zoo ntawm qhov no, ces f muaj qhov tsawg kawg nkaus hauv zos ntawm no.