Isithombe: Ingalo eguquguqukayo egqamisa ukwakheka kwemisipha

Isithombe siwumfanekiso obukekayo omangalisayo wokwakheka kwemisipha namandla omuntu, esithwetshulwe ngobuciko obucacile kodwa besayensi obucacile obudonsa iso kukho kokubili isimo nokusebenza kwengalo yomuntu. Enkabeni yayo kunengalo enamandla, egobile, amakhonsathi ayo anikezwe ukunemba kangangokuthi wonke umthambo, umthambo, kanye nemicu engaphansi kwesikhumba kubonakala kucishe kube yimifanekiso eqoshiwe. I-bicep ikhukhumalela ngaphandle ekuboniseni ukufinyela okuphezulu, kuyilapho i-triceps nengalo yengalo inikeza ibhalansi, okwenza ukwakheka okuvumelanayo okungadluliseli nje amandla anonya kodwa umklamo oyinkimbinkimbi wemisipha yomuntu. Isikhumba, esibushelelezi futhi esinwebeka kancane, sisebenza njengendawo ekhanyayo ekhomba ezakhiweni ezingaphansi, siveze ngobuqili inethiwekhi yezicubu ezixhumeneyo kanye nemigudu yomjikelezo ephehla amandla emisipha. Imininingwane emihle—imivimbo efiphele, ukunyuka nokuwa kwemithambo, ukuhleka kwesikhumba—isebenza ndawonye ukuze ikhumbuze obukele ukuthi amandla awakona nje ukubonakala kwangaphandle kodwa nangokwezimiso ezingabonakali ezisekela ukukhuthazela, ukululama nokukhula.

Ukukhethwa kwesizinda kudlala indima ebalulekile ekugxiliseni ukunaka. Ingemuva elingathathi hlangothi, elingaxutshwe nalutho liqeda ukuphazamiseka, liqinisekisa ukuthi konke ukugcizelela kuhlala kusengalweni ngokwayo. Ubulula bayo bukhulisa isihloko, kushintsha umsipha ogobile ube ucezu oluphakathi nendawo, cishe njengomsebenzi wobuciko ovezwa kugalari. Ngokukhumula izakhi ezingaphandle, ukwakheka akugcizeleli ingalo njengengxenye yomzimba kodwa njengophawu, ukubonakaliswa kwe-distilled kwamandla, ukukhuthazela, nokuqina ngokomzimba.

Ukukhanyisa kuthuthukisa lesi simboli ngobuhlakani obumangalisayo. Ukukhanya okufudumele, okusabalele kugeza phezu kwengalo, kuthambisa ukhahlo lwethunzi kuyilapho kusadala ukugqama okwanele ukuze kugqanyiswe ukujula nokwakheka. Ukudlala kokukhanya nesithunzi kugqamisa izigodi nezigodi zemisipha ne-tendon, okunikeza isithombe ikhwalithi enezinhlangothi ezintathu ezizwa ifana nempilo futhi ilangazelela. Ukufudumala kokukhanya kwengeza amandla, kugcwalise ingalo ngokukhazimula okunempilo okubonisa isimo esihle somzimba. Lokhu kulinganisela phakathi kwedrama nokuthamba kuqinisekisa ukuthi indawo izwakala inamandla ngaphandle kokuba nomtholampilo, ivusa inkanuko ngaphandle kokwehlela kwihaba.

Ngaphandle kwendawo, isimo sesithombe sikhuluma ngendaba ejulile yokululama nokukhula. Ingalo egobile ayiwona nje umbukiso wamandla akhona kodwa futhi isingathekiso senqubo yokuba namandla ngemijikelezo yokuzikhandla, ukulungisa, nokuvuselela. Imisipha ayikhuli ejimini kuphela kodwa emahoreni athule ngemva kwalokho, ikhuthazwe ukudla okunomsoco nokululama. Lapha, ingalo iba yisingathekiso esibonakalayo sendima yezithako ezifana neprotheyini ye-casein, ehlinzeka umzimba ngokukhululwa kancane, okuqhubekayo kwama-amino acid ukusiza ekululameni ngobusuku obubodwa. Ubungqabavu obukhazimulayo besikhumba kanye nokusikisela kwamandla angaphakathi ngaphansi kwaso kuqinisa umqondo wokuthi okwenzeka ngaphansi kobuso kubaluleke kakhulu njengalokho okubonakalayo.

Sekukonke, ukwakheka kukhuluma ngebhalansi phakathi kobuhle nebhayoloji, phakathi kokusebenza nokunakekela. Imema isibukeli ukuba sazise umzimba womuntu njengokuyisimangaliso somklamo kanye nomsebenzi oqhubekayo, ovumelana nezimo nokwakha kabusha. Ingalo egoba ngokumelene nobulula bengemuva layo, elikhanyiswe ngokukhanya okufudumele, ayikhulumi nje amandla okwamanje kodwa umyalezo obanzi mayelana nokuzinikela, ukuqina, namathuluzi—njengeprotein ye-casein—asekela ukukhula kwesikhathi eside. Isithombe siyisifundo se-anatomy kanye nophawu lokulangazelela, okusikhumbuza ukuthi amandla alingana nalokho esikufaka emizimbeni yethu njengalokho esikufuna kubo.

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