Zvikamu zveganda

Zvemukati

• Mhedziso

Mhedziso

Wepakati munhu mukuru ane anenge mapaundi matanhatu eganda akafukidza 18 mativi tsoka, zvichiita ganda nhengo huru yemuviri. Ngatitarisei kuti ganda rakaiswa sei pamwechete. Ganda rine zvikamu zvitatu. Nzvimbo yepamusoro ndiyo epidermis. Inodzivirira mamwe matanda kubva kunze kwekunze. Ine masero anogadzira keratin, inodzivirira mvura uye inosimbisa ganda. Iyo epidermis zvakare ine masero ane melanin, iyo yakasviba pigment iyo inopa ganda ruvara rwayo. Mamwe masero ari mu epidermis anotibvumidza kuti tinzwe kubata uye nekupa hutachiona kubva kune vanopinda senge mabhakitiriya uye mamwe utachiona.

Icho chepasi pasi ndiyo hypodermis. Iine mafuta maseru, kana adipose tishu, inodzivirira muviri uye inobatsira kuchengetedza kupisa. Pakati peepidermis uye hypodermis ndiyo dermis. Iine masero anopa simba reganda, rutsigiro, uye kusanduka.Sezvo isu tinokwegura, maseru ari mudermis anorasikirwa nesimba ravo uye kugadzikana, zvichikonzera ganda kurasikirwa nechitarisiko chevechidiki.

Iyo dermis ine sensory receptors inobvumidza muviri kuti ugamuchire kukurudzira kubva kunze uye unzwe kumanikidzwa, kurwadziwa, uye tembiricha.Network yemidziyo yeropa inopa ganda nezvinovaka muviri, uye kubvisa zvigadzirwa zvemarara.

Sebaceous glands inogadzira mafuta anoita kuti ganda risaome. Oiri kubva kune dzakasarudzika gland inobatsirawo kupfavisa vhudzi uye kuuraya mabhakitiriya ari pores eganda.

Aya magemenzi anofukidza muviri wese, kunze kwezvanza zvemaoko nepasi petsoka.

• Ganda Mamiriro