Sengoli: Joan Hall
Letsatsi La Creation: 2 Hlakubele 2021
Ntlafatsa Letsatsi: 18 Phuptjane 2025
Anonim
PHEELLO | PELO EAKA E EA HLORA  | Litlhare tsa Natala
Video: PHEELLO | PELO EAKA E EA HLORA | Litlhare tsa Natala

Litaba

Bapala video ea bophelo bo botle: //medlineplus.gov/ency/videos/mov/200100_eng.mp4Ke eng see? Bapala video ea bophelo bo botle ka tlhaloso ea molumo: //medlineplus.gov/ency/videos/mov/200100_eng_ad.mp4

Kakaretso

Letlalo le sebelisa khanya ea letsatsi ho thusa ho hlahisa vithamine D, e bohlokoa molemong oa tlhaho ea masapo. Empa ho na le bothata. Leseli la mahlaseli a letsatsi le ka baka tšenyo e khōlō letlalong. Lera le ka ntle la letlalo le na le lisele tse nang le melanin ea pigment. Melanin e sireletsa letlalo mahlaseling a letsatsi a li- ultraviolet. Tsena li ka chesa letlalo le ho fokotsa ho saroloha ha tsona, ho lebisa ho tsofaleng pele ho nako.

Batho ba tan hobane khanya ea letsatsi e etsa hore letlalo le hlahise melanine le ho fifala. Letlalo lea fela ha lisele tse ncha li fetela holimo 'me lisele tse soeufalitsoeng li thelloa. Khanya ea letsatsi e ka ba ntle ha feela o na le ts'ireletso e nepahetseng ho tlholehong. Empa mahlaseli a mangata haholo a UV a ka baka ho chesoa ke letsatsi. Mahlaseli a UV a phunyeletsa matlalo a kantle a letlalo ebe a thula likarolo tse tebileng tsa letlalo, moo a ka senyang kapa a bolaea lisele tsa letlalo.


Batho, haholo-holo ba se nang melanine e ngata le ba chesoang ke letsatsi habonolo, ba lokela ho itšireletsa. U ka itšireletsa ka ho koahela libaka tse thata, ho roala lithibela letsatsi, ho fokotsa nako ea ho pepeseha, le ho qoba letsatsi mahareng a hora ea leshome hoseng le ea bobeli bosiu.

Ho pepesehela mahlaseli a mahlaseli a kotsi khafetsa ka lilemo tse ngata ke sesosa se ka sehloohong sa mofetše oa letlalo. 'Me kankere ea letlalo ha ea lokela ho nkoa habobebe.

Lekola letlalo la hau khafetsa bakeng sa makhopho a belaetsang kapa liphetoho tse ling tsa letlalo. Ho lemoha le ho fumana kalafo kapele ke senotlolo sa kalafo e atlehileng ea mofets'e oa letlalo.

  • Ho hlahisa letsatsi

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