Isikhumba - isitho elikhulu obuntu

Ngezindlela eziningi isitho kakhulu-kakhulu: kakhulu, kakhulu nzima futhi enza izinto ezihlukahlukene kakhulu. is it Umiswe kuphi futhi yini igama?

Sisebenza ukhuluma ngani esikhumbeni, olunzima emzimbeni, ngoba ukuba 3kg isisindo. futhi futhi isitho womuntu ngobukhulu. Uma kuqondiswa, isibonelo, utawufaka kuze kufinyelele 2.3 m². Izinwele nezinzipho ngenhlanhla kufakwe yekhava yethu yangaphandle, ngokuba ezihlobene yayo.

Kusuka umbono wezokwelapha, isikhumba kungachazwa njengendlela umzimba, ngoba yakhiwa izinhlobo ezahlukene kwezicubu, okuyizinto nokuxhumana njalo.

Ngokwesibonelo, abantu ikhava umzimba, njengazo zonke ezilwaneni ezinomgogodla, ivikela hhayi kuphela ke emathonyeni zangaphandle, kodwa futhi kuthatha iqhaza amanzi nosawoti umzimba, futhi ukhonza njengephayona isitho sezinzwa futhi excretory. Isikhumba ehilelekile ukuphefumula ngesikhathi thermoregulation, ngisho uba egcina uketshezi kanye nezakhi.

Umzimba womuntu enkulu inezendlalelo ezintathu: epidermis (ungqimba engenhla) kanye dermis (Kusho) kanye ongama izicubu adipose (hypodermis noma ungqimba phansi).

Ukuhlolisisa i-epidermis

Ebusweni isikhumba ifinyelela 5 mm ukujiya phezu amathe ezinyawo, kepha uma kungenjalo, zonke izingxenye wadalula yomzimba, lesi sendlalelo ezondile 0.1 mm. It epidermis ivikela umzimba ekulweni amagciwane ahlukahlukene ukhunta, igcina kuyaqina kwesikhumba.

Isendlalelo eyayibaluleke we epidermis, ethe njo sebum, - efile futhi keratinized. A aphansi - ulwelwesi basal akhelene dermis. Uqukethe ngokuqhubekayo sokuhlukanisa germ cells ukuthi iyehlukana kude, uqale indlela yabo phezulu. Ngo inqubo ezihambayo kuzo ngenxa zamakhemikhali nazo ezilahlekelwe nucleus futhi organelles namaseli, okwakhiwa kwalo manje ikakhulukazi kuhlanganisa yi-keratin die. Yonke le umjikelezo ihlala kufika ezinsukwini ezingu-30.

Isendlalelo engezansi sesikhumba wokuqukethwe lelisetulu amaseli fat, osebenza njengokuvimbelayo onalo amandla ethu, futhi wenza umsebenzi zihlale zifudumele. Kulesi ungqimba phansi izimpande izinwele, futhi nazi kunazo zonke kwezingu-nemithambo yegazi isikhumba.

Skin - isitho sezinzwa

Ingabe uke waphawula ukuthi eziningi imizwelo yabantu ngokuphelele ibonisa enkulu yethu igunya? Uma sifuna namahloni, sithukuthelele, uyajabula noma ujabula kakhulu into - isikhumba sethu reddens. Kuyacaca ukuthi lokhu kungenxa anda kwegazi futhi uxhumano lwe-ngeminye imikhumbi.

Kodwa ngemva kwesikhashana yokwesatshwa, thina, kunalokho, ukuvula eliphaphathekile, bese sicabanga ukuthi ngisho izinwele bavuka. Futhi lokhu kuwumphumela igazi ligeleze inhliziyo futhi imisipha ukungezwani.

Ukucindezeleka noma excitability anda izwakalisa ngokucacile isitho womuntu ngobukhulu. Kuye kwaphawulwa ukuthi ngemva uthi enjalo ngokuvamile esibonakala siyikho ukuqubuka futhi ukucasuka esikhumbeni. Kodwa lapho sifikelwa ngokuvumelana elingokomoya nothando ujabule, eba batshengise enempilo futhi abasebasha.

Ngaphezu kwalokho, isitho womuntu ngobukhulu olunamagama isimo wonke umzimba. Ubhekisela izinqubo sokugembula ekhona pheshana emathunjini, uhlelo hematopoietic, uhlelo zokuzala, kanye nabanye.

Uma banakekele isikhumba sakho, baligcine ahlanzekile nokuqinisela, izinqubo yokuhlanzeka nje kuphela, kodwa nendlela yokuphila enempilo, kanye okhilimu zeminyaka efanelekile futhi Scrubs ke uyobheka abasha isikhathi eside.

Futhi ake isitho sakho ngobukhulu e abantu abangasoze uyonika engu yomnikazi!