Zuciya
Zuciya dai murdaddiyar sashin jiki ce a mafi yawan dabbobi, wanda farashin sa jini ta cikin jini daga cikin jijiyoyi .  Jinin da aka zubo yana ɗaukar iska wato oxygen da abinci mai gina jiki zuwa jiki, yayin daukar dattin rayuwa kamar su carbon dioxide zuwa hunhu .  A cikin mutane, zuciya kusan girman dunkulen hannu ne kuma tana tsakanin hunhu, a tsakiyar bangaren kirji .

Jinsi 
A cikin mutane, wasu dabbobi masu shayarwa, da kuma tsuntsaye, da zuciya ne zuwa kashi hudu da bẽnãye: babba hagu da kuma dama atria da kuma kananan hagu da kuma dama ventricles .   Galibi ana kiran atrium na dama da ventricle tare azaman zuciyar dama da takwarorinsu na hagu kamar zuciyar hagu .  Akasin haka, kifi yana da dakuna biyu, atrium da ventricle, yayin da dabbobi masu rarrafe suna da dakuna uku.  A cikin lafiyayyar zuciya, jini yana gudana ta hanya guda ta cikin zuciya saboda bugun zuciya, wanda ke hana sake komowa .  Zuciya a rufe take cikin jakar kariya, pericardium, wanda kuma ya kunshi karamin ruwa . Bangon zuciya yana da tsari uku: epicardium, myocardium, da endocardium .

Tusarrafi 
Zuciya tana harba jini tare da amo wanda wata gungiyar kwayoyin cuta masu sassaucin ra'ayi ta kaddara a cikin kumburin sinoatrial . Wadannan suna haifar da wani yanayi wanda ke haifar da guntatawar zuciya, tafiya ta cikin kirar atrioventricular kuma tare da tsarin tafiyarwar zuciya . Zuciya tana karɓar jini kasa da iskar oxygen daga zagayawa na tsari, wanda ya shiga atrium na dama daga mafi girma da kankancin venae cavae kuma ya wuce zuwa gefen dama. Daga nan ne ake harba shi zuwa cikin huhu na huhu, ta huhu inda yake karbar iskar oxygen kuma yana bayar da iskar carbon dioxide. Jinin da yake dauke da iskar oxygen sannan ya dawo zuwa atrium na hagu, ya ratsa ta gefen hagu kuma ana fitar da shi ta cikin aorta zuwa zagayawa na yau da kullun − inda ake amfani da iskar oxygen din kuma a sanya shi zuwa carbon dioxide.  A zuciya lashe a shimfida, rate kusa zuwa 72 lashe minti daya.  Exercise dan lokaci qara kudi, amma lowers Allaha zuciya rate a cikin dogon lokaci, da kuma shi ne mai kyau ga lafiyar zuciya.

Zuciyar bangaran dama 
Zuciyar dama ta kunshi dakuna biyu, atrium na dama da na dama, wadanda bawul dinsu ya rabu, tricuspid valve.  The dama atrium na'am da jini kusan ci gaba daga jiki ta biyu manyan veins, da m kuma na baya venae cavae . Ananan jini daga jijiyoyin jini kuma yana malalawa a cikin atrium na dama ta hanyar jijiyoyin jijiyoyin jini, wanda yake nan da nan sama da zuwa tsakiyar budewar karancin vena cava.  A bangon dama atrium akwai wani irin yanayi mai kama da oval da aka sani da fossa ovalis, wanda ya kasance ragowar budewa a cikin zuciyar tayi wanda aka fi sani da foramen ovale .  Yawancin bangaren ciki na atrium na dama yana da santsi, bacin rai na fossa ovalis na tsakiya ne, kuma farfajiyar gaba tana da manyan rakuman tsokoki na pectinate, wadanda suma suke a cikin madaidaicin kararrakin atrial . 

An hada atrium na dama zuwa ventricle na dama ta tricuspid bawul.  Bangon hagu na dama yana hade da carneae na trabeculae, tsoffin tsokar zuciya da aka rufe ta endocardium. Bugu da dari ga wadannan rakuman tsoka, gungiyar kwayar tsoka ta zuciya, wanda aka rufe shi da endocardium, wanda aka sani da gungiyar mai daidaitawa yana karfafa ganuwar bakin ciki na kyamar dama kuma tana taka muhimmiyar rawa wajen gudanarwar zuciya. Yana fitowa daga ƙananan bangaren bangaren mabubbuka na tsaka-tsalle kuma ya tsallaka sararin ciki na kyamar dama don hadi tare da tsokar papillary mara karfi.  Hannun dama na dama ya shiga cikin akwati na huhu, inda yake fitar da jini yayin kwangila. Gangar jikin huhu ta sauka zuwa jijiyoyin hagu da dama na jini wadanda suke daukar jini zuwa kowane huhu. Bakin ciki na huhu yana tsakanin zuciyar dama da akwatin huhu.

Zuciyan bangaran hagu 
Zuciyar hagu tana da dakuna guda biyu: atrium na hagu da na hagu, wadanda aka kebe da bawul na mitral .  Atrium na hagu yana karbar jini mai iska daga huhu ta bayan jijiyoyin huhu hudu. Atrium na hagu yana da fitarwa wanda ake kira appendage na hagu . Kamar atrium na dama, atrium na hagu yana layi ne da tsokoki na pectinate .  Hannun hagu na hagu zuwa haɗin hadin hagu ta maballin mitral.  Hannun hagu na da kauri sosai idan aka kwatanta shi da dama, saboda tsananin karfin da ake bukata don dora jini a jikin duka. Kamar ventricle din dama, na hagu shima yana da carneae, amma babu gungiyar mai yin magana . Hagu na hagu yana harba jini zuwa jiki ta cikin bawalin aortic kuma zuwa cikin aorta. Smallananan kananan kofofi sama da bawul aortic suna dauke da jini zuwa zuciyar kanta, babban jijiyoyin jijiyoyin zuciya da kuma jijiyar dama na jijiyoyin jini .

Cututtukan zuciya 
Cututtukan zuciya da jijiyoyin jini (CVD) sune sanadin mutuwa a duniya baki daya kamar na shekarar 2008, wanda ya kai kashi 30% na mace-macen.   Daga cikin waɗannan fiye da kashi uku cikin uku sakamakon cututtukan jijiyoyin jijiyoyin jini ne da cutar shanyewar jiki .  Hadarin dalilai sun hada da: shan taba, kasancewa kiba, kadan motsa jiki, high cholesterol, hawan jini, da kuma talauci sarrafawa ciwon sukari, da sauransu.  Cututtukan zuciya da jijiyoyin jini akai-akai ba su da alamomi ko kuma na iya haifar da ciwon kirji ko karancin numfashi . Ganewar asali na cututtukan zuciya galibi ana yin sa ne ta hanyar daukar tarihin likita, sauraren sautunan zuciya tare da stethoscope, ECG, da duban dan tayi .  Kwararrun da ke mai da hankali kan cututtukan zuciya ana kiran su masu ilimin zuciya, kodayake yawancin fannoni na magani na iya kasancewa cikin magani.

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