Munyori: Joan Hall
Zuva Rekusika: 2 Kukadzi 2021
Gadziridza Zuva: 23 Mbudzi 2024
Anonim
"Tunataka Uhuru akome kuita watu wezi, kama ni wezi ni yeye na serikali yake" Mp Nyali
Vhidhiyo: "Tunataka Uhuru akome kuita watu wezi, kama ni wezi ni yeye na serikali yake" Mp Nyali

Zvemukati

Ridza vhidhiyo yehutano: //medlineplus.gov/ency/videos/mov/200100_eng.mp4Chii ichi? Tamba vhidhiyo yehutano nerondedzero yekuteerera: //medlineplus.gov/ency/videos/mov/200100_eng_ad.mp4

Mhedziso

Ganda rinoshandisa mwenje wezuva kubatsira kugadzira vhitamini D, yakakosha pakuumbwa kwemapfupa. Asi pane zvakashata. Chiedza chezuva che ultraviolet chinogona kukonzera kukuvara kukuru paganda. Rutivi rwekunze rweganda rune masero ane pigment melanin. Melanin inodzivirira ganda kubva kumwaranzi yezuva ultraviolet. Izvi zvinogona kupisa ganda uye kudzikisa kusimba kwaro, zvichitungamira kukwegura isati yakwana.

Vanhu tan nekuti mwenje wezuva unokonzeresa ganda kuburitsa melanin yakawanda uye kusviba. Iyo tan inopera kana masero matsva achienda kumusoro uye maseru akacheneswa akadzvanywa. Chiedza chezuva chinogona kuve chakanaka sekureba iwe uchinge uine chengetedzo chaiyo kubva kukuwedzeredzwa. Asi yakawandisa ultraviolet, kana UV, kuratidzwa kunogona kukonzera kupisa kwezuva. Iwo maRV anopinda mukati meganda akaturikidzana ndokurova zvakadzama zvikamu zveganda, kwaanogona kukuvadza kana kuuraya maseru eganda.


Vanhu, kunyanya avo vasina melanin yakawanda uye vanopiswa nezuva nyore, vanofanirwa kuzvidzivirira. Unogona kuzvidzivirira nekufukidza nzvimbo dzinotetepa, kupfeka chekuvhara zuva, kudzikisira yakazara nguva yekuratidzira, uye kudzivirira zuva pakati pegumi kusvika na2 masikati.

Kugara uchionekwa kune ultraviolet mwaranzi pamusoro pemakore mazhinji ndicho chikonzero chikuru chegomarara reganda. Uye gomarara reganda harifanirwe kutorwa zvishoma.

Tarisa ganda rako nguva zhinji nekufungidzira kukura kana kumwe kuchinja kweganda. Kukurumidza kuona uye kurapwa kwakakosha pakurapa kwakabudirira kwegomarara reganda.

  • Kubuda kwezuva

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