19.0: Utangulizi wa Moyo

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Katika sura hii, utachunguza pampu ya ajabu ambayo inahamasisha damu ndani ya vyombo. Hakuna neno moja bora zaidi la kuelezea kazi ya moyo isipokuwa “pampu,” kwani contraction yake inakua shinikizo linalojitokeza damu ndani ya vyombo vikuu: aorta na shina la mapafu. Kutoka kwa vyombo hivi, damu inasambazwa kwa salio la mwili. Ingawa ufafanuzi wa neno “pampu” unaonyesha kifaa cha mitambo kilichofanywa kwa chuma na plastiki, muundo wa anatomical ni misuli hai, ya kisasa. Unaposoma sura hii, jaribu kuweka dhana hizi za mapacha katika akili: pampu na misuli.

Ingawa neno “moyo” ni neno la Kiingereza, istilahi ya moyo (yanayohusiana na moyo) inaweza kufuatiliwa nyuma kwa neno la Kilatini, “kardia.” Cardiology ni utafiti wa moyo, na cardiologists ni madaktari ambao kushughulika hasa na moyo.