Tus thawj spermatocyte faib meiotically (Meiosis I) rau hauv ob lub spermatocytes thib ob; Txhua tus spermatocyte thib ob faib ua ob qhov sib npaug haploid spermatids los ntawm Meiosis II. Cov spermatids hloov mus ua spermatozoa (sperm) los ntawm txheej txheem ntawm spermiogenesis.
Lub sijhawm twg cov spermatids hloov mus rau spermatozoa?
Spermiogenesis yog theem sib txawv ntawm cov spermatids rau hauv cov spermatozoa paub tab. Nyob rau theem no, cov spermatids dhau los ntawm kev hloov pauv morphological kom ua tau yooj yim dua thiab compacted.
spermatozoa tsim nyob qhov twg?
Cov phev loj hlob hauv cov noob qesnyob rau hauv lub cev ntawm cov hlab me me hu ua seminiferous tubules. Thaum yug los, cov tubules no muaj cov kab mob yooj yim.
Qhov txawv ntawm spermatid thiab spermatozoa yog dab tsi?
Spermatid yog loj roundish, tsis tu ncua cell nrog cell organelles nyob rau hauv nws. Spermatozoa yog rab koob zoo li, uas muaj peb qhov sib txawv: lub taub hau, nruab nrab daim thiab tus Tsov tus tw. Spermatid muaj golgi lub cev, spermatozoa muaj acrosomal cap: so ntawm golgi yog muab pov tseg thaum metamorphosis. Nucleus hauv spermatid yog loj, puag ncig.
Spermatozoa yog dab tsi?
Spermatozoa (sperm) yog cov txiv neej cov hlwb uas nqa cov txiv neej cov khoom siv caj ces. … Ib tug phev fertilizes poj niam lub qe (ovum) los ntawm kev tawg ntawm daim nyias nyias uas nyob ib ncig ntawm lub qe. Cov phev loj hlob nyob rau hauv ib tug txiv neej lub noob qes. Lawv muab ntxiv rau cov phev ua ntej tus txiv neej ejaculation.
