Kiyasta lokacin karantawa: 4 minti daya
Table of Contents
CNX OpenStax, CC BY 4.0 https://creativecommons.org/licenses/by/4.0, ta hanyar Wikimedia Commons
Gabaɗaya Wuri da Ƙungiyoyin Jiki
Zuciya ita ce cibiyar tsakiya na tsarin jini da kuma tsakanin huhu lobes faruwa. a wajen zuciya, pericardium An kewaye ta da wata jaka mai suna . A zahiri:
• A bayyane diyafram,
• A zahiri mahaifa located.
A cikin karnuka da kuliyoyi, zuciya tana kusa 3/5 a gefen hagu, ragowar yana hannun dama kuma 3-7. tsakanin hakarkarinsa zauna.
Zauren Zuciya
Zuciya tana aiki don fitar da jini zuwa jiki da huhu daga 4 main chambers ya ƙunshi:
• Dama Atrium (Atrium Dexter, RA): Yana tattara jinin venous kuma ya kai shi ga ventricle na dama. Vena cava cranialis da caudalisyana ɗaukar jini zuwa wannan ɗakin.
• Ventricle Dama (Ventriculus Dexter, RV): venous jini daga dama atrium, bugun jini na huhu Yana aika zuwa huhu.
• Hagu Atrium (Atrium Sinister, LA): Yana tattara jinin oxygen da ke dawowa daga huhu. jijiyoyin bugun jiniyana ɗaukar jini zuwa wannan ɗakin.
• Hagu Hagu (Ventriculus Sinister, LV): Jinin oxygen da yake karɓa daga atrium na hagu, aorta Yana shiga jiki ta hanyar Ita ce dakin da ke da kauri mai kauri na zuciya kuma tana fitar da jini a yayin hawan jini.
Zuciya Valves
Yana ba da damar jini don motsawa zuwa madaidaiciyar hanya a cikin zuciya bawuloli ana samunsa:
• Mitral Valve (Bicuspid Valve): Yana tsakanin hagu atrium (LA) da hagu ventricle (LV).
• Tricuspid Valve: Yana tsakanin dama atrium (RA) da dama ventricle (RV).
• Valve na huhu: Yana sarrafa jijiya na huhu wanda ya samo asali daga ventricle na dama.
• Aortic Valve: Yana sarrafa aorta da ke fitowa daga ventricle na hagu.
Ruwan Zuciya
Zuciya tana aiki ta hanyar hanyar sadarwa don tattarawa da fitar da jini cikin jiki:
• Tasoshin Shiga: shiga dama atrium cututtuka na cranialis ve cava caudalis. shiga atrium hagu jijiyoyin bugun jini.
• Kayan fitarwa: asali daga ventricle na hagu aorta. asali daga ventricle na dama bugun jini na huhu.
Jiragen Ruwa Masu Ciyar da tsokar Zuciya
muscular Layer na zuciya myocardiumyana da tasoshin ruwa na musamman don biyan iskar oxygen da buƙatun sinadirai:
• Arteria coronaria dextra (Jijiyoyin jini na dama): Yana ciyar da bangon zuciya daidai.
• Arteria coronaria sinistra (Hagu na jijiyoyin jini): Yana ba da bangon zuciya na hagu da septum.
Layer na tsokar zuciya
myocardium (tsakiyar Layer) shine mafi kauri kuma mafi yawan aiki na bangon zuciya, yana samar da ƙarfin natsewar zuciya. Sauran manyan sassa biyu na zuciya sune endocardium (launi na ciki) da epicardium (launi na waje).
Asalin Ayyuka na Yadudduka na Zuciya
1. Myocardium (Labarin tsokar zuciya): Babban aikinsa shine zub da jini. Myocardium shine Layer na tsoka wanda ke ba da ikon kwangilar zuciya kuma yana da alhakin zubar da jini zuwa jiki da huhu. Ya ƙunshi ƙwanƙwasa tsokoki waɗanda ke aiki ba tare da son rai ba. Ana motsa shi ta hanyar siginar lantarki kuma yana yin aikin bugun zuciya ta hanyar yin natsuwa akai-akai. Myocardium a cikin ventricle na hagu ya fi kauri kuma yana haifar da matsa lamba don zubar da jini a cikin wurare dabam dabam. Myocardium a cikin ventricle na dama ya fi siriri kuma yana aika jini zuwa wurare dabam dabam na huhu.
2. Endocardium (Labaran Ciki): Babban aikinsa shi ne kare saman ciki na zuciya da tabbatar da kwararar jini mai santsi. Endocardium wani bakin ciki ne na nama wanda ke rufe ɗakunan da bawuloli na zuciya. Yana hana tashin hankali a cikin jini ta hanyar samar da wuri mai santsi. Yana haifar da shinge tsakanin jini da myocardium. Yana taimakawa hana kamuwa da cuta ta hanyar hana ƙwayoyin cuta shiga cikin nama. Yana goyan bayan aikin bawuloli. Yana tabbatar da santsi da kwararar jini na yau da kullun.
3. Epicardium (Labaran Waje): Babban aikinsa shine kare zuciya daga abubuwan waje da kuma samar da ruwan pericardial. Epicardium shine mafi girman murfin zuciya kuma an haɗa shi da visceral pericardium, wanda ke da alhakin fitar da ruwan pericardial. Yana ba da sassauci da lubricity zuwa saman zuciya, yana barin zuciya ta motsa cikin yardar kaina a cikin kejin hakarkarin. Yana kare tsokar zuciya daga rauni ta jiki da wuce gona da iri. Nama mai kitse a kusa da zuciya yana kewaye da tasoshin jijiyoyin jini, yana ba da ajiyar kuzari da kariya.
Wasu Labarun Kuna iya Sha'awarsu
"Abin da na sani shi ne ban san kome ba."
Socrates
