خانه / آناتومي قلب / ساختمان قلب

ساختمان قلب

قلب عضوی عضلانی و تو خالی است که در فضای مدیاستن ( فضای وسط قفسه سینه بین دو ریه ) فرار دارد . بطوریکه قاعده قلب به طرف بالا سمت راست و راس قلب در پایین و سمت چپ قرار دارد . دو سوم قلب در سمت چپ و یک سوم آن در سمت راست خط فرضی مید استرنال قرار دارد .
وزن قلب از 280 تا 350 گرم متغیر است به طور تقریبی 300 گرم و بسته به سن ، قد ، وزن ، چاقی و لاغری افراد و فعالیت بیمار و بیماریهای قلبی متفاوت می باشد . طول قلب 12.5 و عرض آن 8.5 سانتی متر می باشد . قلب فضای زیادی از مدیاستن را در بر دارد به طوریکه 3/2 آن سمت چپ و 3/1 آن سمت راست قرار خط فرضی mid sternal دارد.

کار قب پمپاژ خون به سمت اندامها و بافتها و ارائه اکسیژن و مواد غذایی و دریافت دی اکسید کربن و مواد زاید حاصل از متابولیم می باشد . قلب یک فرد در هر دقیقه 60-80 ضربان در دقیقه دارد . برون ده قلب حدود 5 لیتر در دقیقه می باشد .

همچنین قلب از سه لایه تشکیل شده است که عبارتند از:
قلب از سه لایه تشکیل شده است :
1- لایه پریکارد یا اپی کارد Epicardium ( Pericardium )
2- لایه میوکارد Myocardium
3- لایه اندوکارد Endocardium
که هر کدام از این سه لایه عملکرد و وظایف خاص خود را دارند.

منبع: سایت قلب

۵۰ دیدگاه

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