Ihliziyo

Ihliziyo sisitho somzimba esisebenza ukupompa igazi elisemzimbeni. Ihliziyo iqakathekeko erherhweni legazi ngombana ngaphandle kwayo igazi angekhe lakghona ukukhamba emzimbeni. Ihliziyo ngiyo eyenza bona umzimba ube nepilo begodu usebenze. Umzimba angekhe wasebenza lokha ihliziyo nayingekho^[1].

Ukwakheka kwehliziyo

Ihliziyo inamakamero amane ngaphakathi ekuyi-atria yangesinceleni nayange sidleni. Bese kube nama ventricle, yesinceleni neyangesidleni. Wowkke amakamero la asebenza ukwamukelwa iingazi ezivela emzibeni ngmama veyini. Ama ventricle makamero angaphasi ehliziyweni asebenza ukupompa igazi liphume ezimbeni ngama ngemisipha yama-artery^[2].

Umsebenzi wehliziyo

Uhliziyo isebenza ukupompa igazi ilizalise nge-oksijini nezakha mzimba bese igazi lko liya ezithweni zomzimba nenyameni. Iqinisekisa bona igazi ligeleza umzimba woke ngaphandle kokujama nofana ngaphandle koku thikamezeka^[3].

Ukukhamba kwegazi ehliziyweni

Igazi eliphelelwe yi-oksijini lisuka emzimbeni ngamaveyini bese libuyela ehliziyweni. Igazi leli lingena ehliziyweni lingena ngomsipha we superior ne inferior vena cava ungene ngaku-atria yangesidleni. Igazi likhamba liyokufika ku ventricle yangesidleni nge-tricuspid valve. Igazi liyampopeka lisuke ku ventricle yangesidleni bese liye emaphaphini lidluliswa yi-pulmonary artery. Igazi nalifika emaphaphini lithola nofana lizala nge-oksijini bese libuyela ehliziyweni lingene nge-atria yangesinceleni.Igazi leli bese liyadlula liyaphuma godu liyokungena ngaku ventricle yangesinceleni lisebenzisa I mitral valve^[4]. I-ventricle yangesinceleni ipompa igazi ilise ku aorta ekungiyo ebuyisela igazi emuva liye ezithweni zomzimba nenyameni ^[5].Ihliziyo isisitho somzimba umuntu angekhe akghona ukuphila ngaphandle kwaso. Sisebenza khulu ekukhambiseni iingazi umzimba woke ngaphandle kokujama.

Iinkomba

↑ Katz, A.M., 2010. Physiology of the Heart. Lippincott Williams & Wilkins.
↑ Human Heart- Location, Anatomy, Structure, Functions
↑ Fung, Y.C., 2013. Biomechanics: circulation. Springer Science & Business Media.
↑ How Blood Flows Through the Heart & Body
↑ Saladin, K.S. and Miller, L., 2023. Anatomy & physiology (p. 1248). McGraw-Hill US Higher Ed ISE.

[1] Katz, A.M., 2010. Physiology of the Heart. Lippincott Williams & Wilkins.

[2] Human Heart- Location, Anatomy, Structure, Functions

[3] Fung, Y.C., 2013. Biomechanics: circulation. Springer Science & Business Media.

[4] How Blood Flows Through the Heart & Body

[5] Saladin, K.S. and Miller, L., 2023. Anatomy & physiology (p. 1248). McGraw-Hill US Higher Ed ISE.

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