Lokuphatselene nesakhiwo nemsebenti kwesikhumba

isikhumba Human ingenye izitho ngobukhulu emzimbeni, okuyinto has nokwakheka kwayo siqu futhi izitho zomzimba, futhi ithatha 5% we isisindo umuntu. Sakhiwo umsebenzi isikhumba kuyinto kubenzima. Siqukethe eziningana izingqimba: i epidermis, dermis (isikhumba) kanye adipose izicubu, futhi ngamunye wabo e uhlaka lwayo futhi eziningana izingqimba.

Ngakho, epidermis has eziyisihlanu kuzo:

1. Okuxhunyanwa (embryonic) - ukhiqiza i-melanin, ngenxa lapho isikhumba angakuthola ezahlukene shades. Ngesikhathi esifanayo, ukuthi kuyini, lo mnyama isikhumba somuntu. Ngaphezu kwalokho, kukhona kwenzeka ekwandeni amaseli.
2. Styloid. Through izinqubo amaseli akha lesi sendlalelo, izindlala zamanzi ageleza, ukusuthisa amaseli bese okwenza kungabi imikhiqizo yokubola.
3. Enokolweni - iqukethe eleidin. On amathe nezintende zezandla, it has imigqa emihlanu amaseli.
4. Esobala - yakhiwa eleidin futhi siqukethe ayibe nezinhla ezintathu amaseli. It is ithuthukiswe ku amathe nezintende zezandla, kodwa akukho izindebe.
5. Yangaphandle (uphondo) - iqukethe yi-keratin, esiza wokuqhubeka zesikhumba umswakama, lapha amaseli kalula delaminate. Ngaphezu kwalokho, lesi sendlalelo okungukuthi ngokwanele aminyene futhi bakwazi ukubhekana nokuhlupheka, ivikela isikhumba kusuka mechanical futhi amakhemikhali imiphumela, isib, ukulimala, abandayo, ukusha kanye nezinye.

Uma ucabangela lokuphatselene nesakhiwo nemsebenti kwesikhumba, ingasaphathwa kakhulu dermis. It has izingqimba ezimbili:

1. Isendlalelo papillary - yakhiwa Imicu yotshani mncane futhi usentekenteke.
2. Net - iqukethe sebaceous futhi izithukuthuku nezindlala, ziqoqwa fibre izinyanda kusukela kuyaqina yabo incike impahla wesikhumba, njenge-kuyaqina.

Ngokulandelayo, cabanga lokuphatselene nesakhiwo nemsebenti kwesikhumba, ezifana amafutha ongama.

izicubu Adipose iyona sloom ejulile. Siqukethe igridi ne tincetu okunamafutha izicubu, enikeza isiqondiso ezishisayo wonke umzimba futhi inikeza ke ukuvikelwa ukulimala. Lapha kukhona izitsha ezinkulu igazi nezinzwa, kanye muscle sebaceous nezindlala. Kuyathakazelisa ukuthi insikazi, lesi sendlalelo kancane mkhulu kunokhalo eyabantu. Kuncane kakhulu lubonakaliswa phezu izindebe futhi ezindlebeni.

Skin isakhiwo kanye umsebenzi okuyizinto ngempela eziyinkimbinkimbi, has imikhumbi emibili inethiwekhi:

1. Network, elise emngceleni dermis namafutha.
2. Uxhumano losendzaweni phakathi papillary futhi reticular izingqimba.

Kusukela indawo lezi zitsha kuncike umbala kwesikhumba. Kunabo eduze kwamanzi, kulapho evelele othi awube.

Kufanele ukuthi isakhiwo kwesikhumba etincenyeni letehlukene umzimba lihlukile. Aminyene futhi anolaka ivuliwe amathe nezintende zezandla, lolu godo nokunwebeka. Kakhulu obucayi isikhumba okungukuthi ebusweni. Ibala lesikhumba ezabangela kuxhumene imisipha yakhe striated, ngakho-ke neselula.

Imisebenzi kwesikhumba abasakwazi nezigigaba ezihlukahlukene:

1. Esivikelo umsebenzi - ukuvikela umzimba emiphumeleni zangaphandle izici, okubala mechanical imisebe. Futhi omunye izakhiwo isikhumba ukuze azivikele nezilwanyana ezincane. Lezi imisebenzi uhlinzeke epidermis (stratum corneum) kanye adipose izicubu.
2. ikhono Absorption sici skin- ukuba ingxenye yomqondo igesi, amanzi kanye nezinto fat-encibilikayo. Lesi sici inikeza ungqimba Horny we epidermis.
3. umsebenzi Excretory - Kwenziwa ngosizo nezindlala sebaceous nomjuluko ngaphansi kokulawula isimiso sezinzwa. Yeka indlela abaphumelela kahle abelwe ngokusebenzisa impahla isikhumba incike yobudala kanye nokudla womuntu kanye amathonya kwemvelo.
4. Thermoregulation - ikhono lomzimba kulondolozwe izinga lokushisa lomzimba ezithile ezingaguquki. Le nqubo Kwenziwa at 80% ngesikhumba.
5. Bamba iqhaza izinqubo umzimba - esikhumbeni amanzi exchange, kanye exchange of amaprotheni, amafutha, carbohydrate, amavithamini kanye nosawoti.

Sakhiwo umsebenzi kwesikhumba, kungaba ngokubhuduzela ngokuthi iyingxenye esisemqoka ekwakhekeni komzimba womuntu abathintekayo ekuthuthukisweni yayo kanye nokusebenza.