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10 fakta du bør vide om sperms

Spermatozoon (flertal: spermatozoer) med sperm eller fulde videnskabelige navn er den reproduktive celle tilhører mandlige individer.

Produktionen af disse celler i testiklerne begynder i puberteten. Det bærer arvelige oplysninger (DNA), at det vil overføre til ægget under befrugtning i hovedafsnittet. Han har en hale, og han er på vej. Hos mennesker frigives ca. 150-200 millioner sperms under en parring. Men, kun én sædcelle kan fertilid ægget. Når en sædceller når en ægcelle (oocyte), det forlader sin hale udenfor for at komme ind i ægget og passerer de arvelige oplysninger til æggene. Sperms findes i en tæt væske. Navnet på denne væske er sæd (Ersuyu), ejeculate eller almindeligt anvendt i form af sperma.

Lederen af Spermatozois ligner Bagerens skovl og indeholder arvelige oplysninger. Der er en struktur kaldet Akzoroma, der omslutter hoveddelen som en hætte og indeholder de enzymer, der er nødvendige for spermatozosiden til at passere gennem ægcelle væggen. Når sædcellen når ægget, frigives enzymerne i den acrosome membran, så spermatozoerne kan komme ind i ægget. N antallet af mandlige DNA-materialer, der kommer i kombineres med en række kvindelige DNA-materialer og består af 2n antal DNA-materialer (denne celle kaldes zygote). Derefter, i zygote, cellerne begynder at formere sig ved at dividere. De X-og Y-kromosomer, der bæres af spermatozoer i forbindelse med dannelsen af køn, er afgørende. Når den kvindelige reproduktions celle bærer X-kromosomer, bærer halvdelen af de mandlige kønsceller X og den anden halvdel Y-kromosomet. Hvis den kvindelige reproduktions celle gøder sædcelle med X kromosom, bliver kromosomerne XX, og det enkelte individs køn bliver til kvinder, hvorimod hvis sædcelle, der bærer Y, gøder, bliver kønnet for den enkelte mand. Der er dog nogle undtagelser. såsom XXY, X0 kan også forekomme med arvelige syge individer.

Selv om sperm er talt i den medicinske verden, dens virkninger, fordele eller indhold er næppe talt af mennesker. Men oplysningerne om det er meget spændende. Her er 10 interessante oplysninger, du ikke kender til sperm.

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