Noj qab haus huvTshuaj

Tus qauv ntawm cov phev cell

Phev hu ua txiv neej nrog txiv neej pw hlwb (gametes). Nws loj (tsis suav tus Tsov tus tw ntev) yog me npaum li cas tshaj li qhov loj ntawm lub zygote. Me qauv ntawm cov phev vim qhov yuav tsum tau xeem kom dhau ib tug kuj ntev deb mus cuag lawv lub qe. Nws yuav tsum tau muab sau tseg hais tias qhov no cell muaj qhov tsawg tshaj plaws loj piv nrog rau tag nrho cov tib neeg lub hlwb.

Tus qauv ntawm cov phev cell

Muaj pes tsawg leeg ntawm gametes muaj xws li lub taub hau, caj dab, hauv nruab nrab ib feem (lub cev) thiab tus Tsov tus tw. Lub pem hauv ntej ntawm lub oval lub taub hau muaj ib tug thiaj li hu ua acrosome. Nws muaj cov enzymes los ntawm cov uas lub plhaub qe nyias mus nyias tshwm sim. Rau cov acrosome yog cov tub ntxhais, uas muaj nees nkaum peb cov txiv neej chromosomes. Thaum fertilization, lawv cov chav nrog nees nkaum-peb poj niam chromosomes muaj nyob rau hauv lub qe. Yog li fertilizing phev theem tsuas yog tus X los yog Y chromosome, li no kev txiav txim, pw ua niam txiv ntawm tus me nyuam.

Sheika gametes ua ib tug txuas nuj nqi ntawm lub taub hau thiab lub cev. Cov muaj ntawm lub caj dab tso cai rau lub taub hau mus rau oscillate thaum lub sij hawm lub zog ntawm cov phev.

Lub cell lub cev yog nyob rau hauv daim ntawv ntawm cov axial filament uas muaj mitochondria thiab microtubules.

Tsov tus tw tseem mus rau nruab nrab feem (lub cev) thiab muaj xws li microtubules coated cytoplasm.

Lub cev qauv ntawm cov phev yog raug rau ib tug ib nrab ntawm tag nrho cov neeg tam sim no nyob rau hauv cov phev. Nws yuav tsum tau muab sau tseg tias tsis xws luag tsis cuam tshuam rau lub caj khoom siv ntawm gametes. Nyob rau hauv cov ntaub ntawv no, lub puas qauv ntawm cov phev yuav cuam tshuam nws muaj peev xwm mus cuag lub qe.

Formulation ntawm cov hlwb yuav siv sij hawm qhov chaw nyob rau hauv crimped coated testicular seminiferous tubule epithelium. Cov tubules tseem tsiv mus nyob ncaj tubules. Lawv, nyob rau hauv lem, muab lub hauv epididymis. Phev yuav tsum xeem dhau tag nrho cov tubules. Yog li, yog nws tag nrho maturation. Lub epididymis kis mus rau hauv duct uas raws li cov inguinal kwj dej thiab mus rau hauv lub plab kab noj hniav. Thaum zoo li no ciav empties rau hauv lub seminal hlwv nyob qab lub zais zis. Lub seminal hlwv tshwm sim txuam nrog ntawm spermatozoa thiab lawv nws nrog cov tsis pub leejtwg paub ntawm lawv cov phab ntsa. Muaj pes tsawg leeg ntawm lub kua muaj xws li qhov tseem ceeb as-ham uas txhawb phev rau lub qe. Raws li cov ejaculatory ciav txiv neej nrog txiv neej pw lub hlwb los ntawm lub seminal hlwv yog ib feem ntawm lub prostate caj pas. Qhov uas lawv yuav tov nrog nws secrets. Tshuaj tebchaw thiab as-ham rau tsim phev alkaline ib puag ncig. Cov no ib ncua kev kawm, uas yog hu ua cov phev. Thaum qhov tshwm sim ntawm cov txiv neej ejaculation nws ntog mus rau hauv lub qhov zis ntawm lub vas deferens thiab ces nrog dag zog yuam yog ntiab tawm ntawm lub cev.

Lub volume ntawm ejaculate tsis pub dhau peb mus rau tsib milliliters, thaum lub xov tooj ntawm cov phev ib milliliter ntawm cov phev yuav tsum tsis txhob yuav tsawg tshaj li nees nkaum lab. Nyob rau hauv lub qub xeev ntawm cov genitals, tus txiv neej cov phev yuav tsum tsis muaj aggregation (cheeb tsam nrog loj ntau). Tej zaum, cov chaw yuav tsum tau txiav txim visually - lawv txawv los ntawm ib tug zoo kawg whiteness thiab ceev.

Thaum lub sij hawm ntawm ejaculation nyob rau hauv tus poj niam lub caj dab ntawm lub tsev me nyuam tau txais ib tug lossis loj npaum li ntawm cov phev. Txawm li cas los, tsuas yog ib nrab ntawm cov uas muaj peev xwm sawv ntawm dua cov qog ua kua plug nyob rau hauv lub uterine ncauj tsev menyuam kwj dej. Ntawm no ib nrab cov phev, nyob rau hauv lem, tsuas yog ib tug me me ib feem yog tau mus cuag lub qhov ncauj ntawm tus uterine hlab. Nyob rau hauv cov ntaub ntawv no, lub qe yog nyob rau hauv ib tug raj ntawm lub tsev menyuam. Raws li ib tug tshwm sim, nyob rau hauv txoj kev mus rau lub qe yog txawm tsawg phev, tsis tag nrho cov uas poob mus rau hauv txoj hlab qe raj. Yog li, lub qe yuav ua tau tiav xwb txog ob puas txiv neej lub hlwb.

Yuav ua li cas ntev nyob phev

Tsis pub dhau ob peb teev nyob hauv koj qhov chaw mos txav gametes acidic paum tsis muaj kua. Lub ncauj tsev me nyuam cov phev yuav nyob rau peb mus rau tsib hnub (tej zaum ntev), nyob ntawm seb tus nqi ntawm cov ncauj tsev menyuam hnoos qeev.

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