Zingaphi iiseli emzimbeni womntu? Ukuba zeziphi ezizezona zibalulekileyo?

Yintoni eyaziwayo ngomzimba womntu? Zingaphi iiseli emzimbeni womntu omdala? Njengokuba beya bekhula kwaye ukuphuhlisa, yini na? Kwihlabathi, oosonzululwazi uzama ukusombulula ezi iiphazili.

Yintoni iseli?

Izazinzulu ukufunda izityalo eziphilayo, izilwanyana, abantu. Yokuhlala - Le ndawo incinane na ephilayo. Emzimbeni womntu kukho ezininzi ngaphezu kwe-100 ezigidi. Inani ngqo ayaziwa. Zingaphi iiseli emzimbeni womntu ofayo ngemihla? Isixa-mali kuxhomekeke ekusetyenzisweni ekujoliswe. Umzekelo, kwi epithelium wamathumbu - 70 billion ngosuku, igazi - 2 billion, kunye neeseli luvo musa ukuntshula emva kokufa.

Ngokuba lixesha lokuqala iiseli ezifumaneka 1665 URobert Guk. Waqonda ukuba omdala umntu, kokukhona kwezi isakhiwo emzimbeni wakhe. , потому что они отмирают и рождаются ежеминутно. Akwenzeki ukuba zibale inani leseli umzimba womntu, ngenxa yokuba bazalwa bafe ngomzuzu.

Sakhiwo umsebenzi

Asikwazi kakhulu malunga kwiiseli emzimbeni womntu, kodwa izazinzulu siyazi ngokuqinisekileyo ukuba isakhiwo ezintsonkothileyo. Uninzi kuquka:

• core, ibizwa ngokuba iiseli intliziyo;
• kukho icytoplasm;
• nucleolus;
• mitochondria;
• shell core;
• ukubunjwa reticular endoplasmic;
• ribosomes;
• lysosomes;
• pits pores;
• iseli inwebu, eqinisekisa ingqibelelo, olawula imali eseleyo intracellular.

Imisebenzi enxulumene kuyondelelaniswe kwezinto. iiseli Glandular ukuvelisa iihomoni okanye enzymes. Amadlala mammary ukuvelisa ubisi, injeke - insulin. Abanye musa kuhlanganiswa, iiseli umz kwezihlunu.

Kungakhathaliseki nokuba bangaphi na iiseli emzimbeni womntu, abakwazi abanakuphila ngaphandle kwawo. Iiseli zizinto kaMoses kumnika umzimba owodwa.

egazi

Yintoni na ulwelo lowo ujikeleze lonke imithambo zabantu? Iqulatha plasma kunye nezinto zeselula:

• Iiseli ezibomvu - iiseli ezibomvu igazi;
• zegazi;
• iiseli ezimhlophe - iiseli ezimhlophe zegazi.

Of Umxholo yabo ixhomekeke lexinene umbala wegazi. It uwugcinayo ukugqithiselwa kweekhemikhali emzimbeni. кровяных клеток. kumzimba omdala malunga 50 bhiliyoni egazi. Kumalunga 5.5 iilitha.

cells sombala

Melanocytes emzimbeni womntu onoxanduva umbala eluswini, iinwele, amehlo kunye amanye amalungu zangaphakathi. iiseli ezinjalo ziqulathe ngaphakathi zombala kukho icytoplasm, ebangela isenzo sabo. Melanocytes undenzele zikhusela UV ray banoxanduva kwezikhumba. Iiseli zohlobo yokutheza okukhulu.

Iiseli ze-nervous system

Le yenye abo ayikwazi zibuyiselwe emva kokufa. igama labo lwenzululwazi - iiseli zemithambo-luvo. umsebenzi wabo - ukusebenza ngalo kwaye udlulise ulwazi pulses zombane eziveliswa ngabo. Luvo zahlulwe iintlobo:

• oluvo (onoxanduva indlela ekukhanyeni, isandi);
• motor;
• interneurons.

Isakhiwo iquka umzimba iseli, dendrite, Umzobo wesi. Ngokutsho kulwakhiwo zabo, ahlulwe aba ngamaqela eziliqela. I-luvo yabantu iqulethe malunga 10 billion iiseli zemithambo-luvo. Qho ngonyaka malunga 10,000 kufa, ndingabi wachacha. I omdala umntu, iintsalela ngaphantsi.

cells lwegciwane

Zingaphi iiseli zomzimba banoxanduva yokuzala? Bona iintlobo ezimbini, ukuba yahlulwe amadoda - sperm - nemazi - iqanda. ubukhulu iseli Amadoda inkulu kakhulu oyinkazana, kuba iqulathe imali enkulu kukho icytoplasm. zaye kuqala bafumanisa ngo-1677, kodwa ke imiqathango zibonakele kwenkulungwane ye-19.

Nangona akunakwenzeka ukuba bathi kakuhle ukuba zingaphi na iiseli emzimbeni womntu, abaphengululi bajonga phantse zonke iintlobo zazo. inxaxheba yabo inxulumene ngqo ubukho zonke izinto eziphilayo emhlabeni uMhlaba. Izazinzulu zizama zifunde ukuba zikhule indlela iiseli zabantu kumaziko ophando. Mhlawumbi baya kuphumelela.