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Pehea ka hana ʻana o ka sperm?
Hoʻomaka ka hana maʻalahi i nā paipu seminiferous o nā testes, kahi haʻahaʻa haʻahaʻa (34 ° C). He sine qua non no kā lākou hana pono ʻana no ka mea inā aia nā testicles i loko o ke kino ponoʻī, ke kiʻekiʻe loa ka mahana o ke kino (37 ° C) no ka hoʻokumu ʻana i ka spermatogonia, nā pūnaewele e lilo i ka sperm. Eia kekahi, neʻe ka mea hope i ko lākou hoʻololi ʻana a loaʻa i nā mea hou i kēlā me kēia pae. No laila, mai nā paipu seminiferous o nā hōʻike, hele lākou i loko o ka epididymis, kahi ʻauʻau liʻiliʻi e kau ana ma luna o ka testis kahi e loaʻa ai ko lākou flagella, e ʻae iā lākou e neʻe. ʻO ka hope, ʻo ka hopena hope loa: nā vesicles seminal kahi e hui pū ai me ka wai e hoʻoneʻe ʻia i ka manawa o ka ejaculation. E hoʻomaopopo: hiki i ke kanaka ke noho momona me hoʻokahi testicle, inā hana maʻamau.
He mau miliona ka sperm
Ce wai opaque a keokeo ua huna ʻia i loko o nā vesicles seminal kahi i hoʻonui ʻia i nā meaʻai (amino acids, citric acids, fructose…) akā i loko o ka prostate e hoʻopuka ai i ka hapalua o ka sperm. Ma laila, hui pū kēia wai me ka sperm e hiki mai ana ma nā vas deferens (he puka ma waena o ka epididymis a me ka vesicle) e hana ai i ka sperm, ʻo ia hoʻi, ka hua momona. Me kēlā me kēia ejaculation, hoʻokahe ke kāne i 2 a 6 ml o ka semen, aia ma kahi o 400 miliona spermatozoa.
Aia kekahi mau manawa i ʻoi aku ka momona ma mua o nā mea ʻē aʻe no nā kānaka?
Hoʻomaka ka Spermatogenesis i ka wā ʻōpio a hoʻomau i ke ola, i kēlā me kēia lā, 24 mau hola o ka lā. E like me nā wahine, ʻaʻohe pōʻai. Inā ʻaʻole he pilikia olakino e hoʻomaka ana i ka hānau keiki. no laila, ʻaʻole pōkole ke kanaka i ka sperm. Eia naʻe, ma hope o 50, loli iki nā mea : He emi ka nui o ka sperm a emi mai ka maikai. Akā ʻaʻole pili kēia i ka ulu ʻana o ka wahine, e pau mau ana i ka menopause.
ʻO Spermatogenesis ka mea e kuhikuhi ai i ka kaʻina hana sperm. ʻOi aku ka lōʻihi o ka Spermatogenesis ma mua o 70 mau lā (ma kahi o ʻelua mahina a me ka hapa). Hana ʻia ma nā ʻanuʻu he nui. I ka wā mua, hoʻomaka ia me nā cell stem germline, i kapa ʻia ʻo spermatogonia. Hoʻonui kēia mau mea a lilo i spermatocytes, a laila spermatids a hope loa spermatozoa. Hāʻawi ka spermatogonia wale nō ma waena o 30 a 50 sperm. I loko o kēia kaʻina hope loa e hana ʻia ai ka mahele pūlima (meiosis), kahi e nalowale ai ka hapalua o kāna mau chromosomes. Hāʻawi ʻia ka sperm me 23 chromosomes. Ke hālāwai lākou me ka oocyte, nona nā chromosomes 23, hana lākou i hua manu me 46 chromosomes.
Hiki iā mākou ke hoʻonui i ka ulu ʻana o ke kāne?
I nā kāne, ʻaʻole pono e kuhikuhi i nā lā maikaʻi e like me nā wahine. Ma ka lima 'ē aʻe, ʻO ka paka (e like me ka waiʻona) hoʻemi nui i ka momona i nā kāne, ma ka hoʻololi ʻana i ka maikaʻi o ka sperm. ʻO ka hoʻōki ʻana i ka puhi paka e hiki iā ʻoe ke loaʻa hou ka momona maikaʻi loa ke hoʻōki ʻoe i ka puhi ʻana mai ka hoʻomau ʻana o ka sperm iā lākou iho. ʻO ka meaʻai kiʻekiʻe i ka momona momona e hoʻemi i ka momona! No laila e pale aku i nā kīʻaha ʻoihana, nā pāpaʻi, nā kīʻaha momona (ka ʻoki, nā ʻoki anu, nā ʻiʻo i loko o nā kīʻaha) a koho i nā momona maikaʻi (e like me ka omega 3). Hāʻawi ka hana kino maʻamau i maikaʻi ke olakino sperm a hiki iā ʻoe ke hoʻopiha i ka vitamina D. Ma ke ʻano laulā, pono e nānā a ke ola maikaʻi me ka manawa moe maʻamau, ka manawa palena i mua o nā pale a pale i ka ʻike ʻana i nā mea hoʻopilikia endocrine.
He melemele, akaka: he aha ke ʻano o ke kala?
ʻO ka maʻamau, he keʻokeʻo ke kala, akā hiki ke akaka a i ʻole melemele liʻiliʻi. Ke melemele ka hua, he hōʻailona paha kēia o kahi maʻi e hiki ke hoʻopilikia i ka momona. Hiki iā ia ke hōʻike i ka oxidation o spermine, kahi protein i hana ʻia i ka wā ʻaʻole maʻamau ka moe. I ka hihia o ka ʻōlelo ʻana o ke kala semen, ua ʻōlelo ʻia e hana a hōʻike bacteriological o ka hua kuhikuhi ʻia e kekahi ʻoihana mālama ola.
He palupalu anei ka sperm?
Hoʻopili ka Sperm i ka acidity e hoʻokaʻawale iā lākou. Eia nō naʻe, ʻoi aku ka liʻiliʻi o ka waika wahine ma hope o ka ovulation. Akā i ka wā o kāna hana ʻana, loaʻa i ka sperm kahi pale: wai seminal (ʻo ia ka sperm) i hoʻonani ʻia me nā pono anti-acidity. Mālama kēia wai i ka sperm. ʻOi aku ka maʻalahi o ka sperm ma o ke komo ʻana i nā lole paʻa, ʻauʻau pinepine, ka hana ʻole i loko o ke kaʻa a i ʻole kahi lumi hana wela.
Pehea ka sperm fertilize i ka oocyte?
Loaʻa iā ia kekahi mau mea hana i kāna hōʻaiʻē. ʻOiaʻiʻo, aia kekahi mau ʻāpana i komo i loko o ka hoʻouluulu. ʻO ka mua, ʻo ke poʻo nona iho ʻelua ʻāpana ʻokoʻa: ʻo ka acrosome, hoʻopiha ʻia me kahi enzyme e hiki ke hoʻoheheʻe i ka pūpū o ka oocyte, a me ka nucleus, e lawe ana i nā ukana chromosomal o ke kelepona (e hui ʻia i loko o ka oocyte e lilo i hua manu) . ʻO ka ʻāpana waena ma ke kumu o ke poʻo kahi mālama o nā meaʻai e hiki ai ke ola o ka sperm i ke kali ʻana i ka fertilization. ʻO ka hope, ʻae ka flagellum iā ia e neʻe i ka wikiwiki e hiki ai ka ovum.