در بالای كليه ها، غده های فوق كليوی قرار گرفته اند. اين غده ها ماده ای ترشح ميكنند كه آدرنالين ناميده ميشود. آدرنالين برای آمادگی بدن در انجام فعاليت های شديد يا دفاع از خود ترشح ميشود. وقتی كه بسيار هيجانزده باشيد، غده های فوق كليوی ناگهان مقدار زيادی آدرنالين در خون ترشح ميكنند که سبب افزايش شدت ضربان قلب و كارآيی آن ميشود.
اين ماده، رگهای متصل به ماهيچه ها را گشاد ميكند و علاوه بر آن موجب افرايش غلظت قند در خون ميشود. به اين طريق است كه بدن خود را با شرايط تطبيق ميدهد. با تاثير آدرنالين، خون از چهره به ماهيچه ها هجوم آورده و به بخش هايی كه ضروری تر است جريان می يابد. برای همين است كه هنگام ترس رنگ از رخسارتان ميپرد. قرار گرفتن انسان در ارتفاع و شرایط غیرعادی مانند صحنه هایی که در تصاویر زیر می بینید نیز از همین قانون پیروی می کند چراکه جسم انسان هرچقدر هم قوی باشد در مواقع هیجان خواهی ترشح آدرنالین را يكی از ملزومات مقاومت خود می داند.
.
http://pnu-club.com/imported/2013/04/3396.jpg
.
http://pnu-club.com/imported/2013/04/3397.jpg
Click here to view the original image of 700x473px.
http://pnu-club.com/imported/2013/04/3398.jpg
Click here to view the original image of 700x456px.
http://pnu-club.com/imported/2013/04/3399.jpg
Click here to view the original image of 700x474px.
http://pnu-club.com/imported/2013/04/3400.jpg
Click here to view the original image of 700x474px.
http://pnu-club.com/imported/2013/04/3401.jpg
Click here to view the original image of 700x455px.
http://pnu-club.com/imported/2013/04/3402.jpg
Click here to view the original image of 700x461px.
http://pnu-club.com/imported/2013/04/3403.jpg
Click here to view the original image of 700x473px.
http://pnu-club.com/imported/2013/04/3404.jpg
Click here to view the original image of 700x454px.
http://pnu-club.com/imported/2013/04/3405.jpg
Click here to view the original image of 700x463px.
http://pnu-club.com/imported/2013/04/3406.jpg
Click here to view the original image of 700x466px.
http://pnu-club.com/imported/2013/04/3407.jpg
Click here to view the original image of 700x473px.
http://pnu-club.com/imported/2013/04/3408.jpg
Click here to view the original image of 700x440px.
http://pnu-club.com/imported/2013/04/3409.jpg
Click here to view the original image of 700x474px.
http://pnu-club.com/imported/2013/04/3410.jpg
Click here to view the original image of 700x425px.
http://pnu-club.com/imported/2013/04/3411.jpg
Click here to view the original image of 700x472px.
http://pnu-club.com/imported/2013/04/3412.jpg
Click here to view the original image of 700x474px.
http://pnu-club.com/imported/2013/04/3413.jpg
Click here to view the original image of 700x456px.
http://pnu-club.com/imported/2013/04/3414.jpg
Click here to view the original image of 700x456px.
http://pnu-club.com/imported/2013/04/3415.jpg
Click here to view the original image of 700x427px.
http://pnu-club.com/imported/2013/04/3416.jpg
Click here to view the original image of 700x465px.
http://pnu-club.com/imported/2013/04/3417.jpg
Click here to view the original image of 700x459px.
http://pnu-club.com/imported/2013/04/3418.jpg
Click here to view the original image of 700x450px.
http://pnu-club.com/imported/2013/04/3419.jpg
Click here to view the original image of 700x458px.
http://pnu-club.com/imported/2013/04/3420.jpg
Click here to view the original image of 700x441px.
http://pnu-club.com/imported/2013/04/3421.jpg
Click here to view the original image of 700x467px.
http://pnu-club.com/imported/2013/04/3422.jpg
Click here to view the original image of 700x466px.
http://pnu-club.com/imported/2013/04/3423.jpg
Click here to view the original image of 700x469px.
http://pnu-club.com/imported/2013/04/3424.jpg
Click here to view the original image of 700x426px.
http://pnu-club.com/imported/2013/04/3425.jpg
Click here to view the original image of 700x458px.
http://pnu-club.com/imported/2013/04/3426.jpg
Click here to view the original image of 700x402px.
http://pnu-club.com/imported/2013/04/3427.jpg
Click here to view the original image of 700x1036px.
http://pnu-club.com/imported/2013/04/3428.jpg
Click here to view the original image of 700x1052px.
http://pnu-club.com/imported/2013/04/3429.jpg
Click here to view the original image of 700x1051px.
http://pnu-club.com/imported/2013/04/3430.jpg
Click here to view the original image of 700x980px.
http://pnu-club.com/imported/2013/04/3431.jpg
Click here to view the original image of 700x933px.
http://pnu-club.com/imported/2013/04/3432.jpg
Click here to view the original image of 700x1049px.
http://pnu-club.com/imported/2013/04/3433.jpg
Click here to view the original image of 700x467px.
http://pnu-club.com/imported/2013/04/3434.jpg
Click here to view the original image of 700x525px.
http://pnu-club.com/imported/2013/04/3435.jpg
Click here to view the original image of 700x525px.
http://pnu-club.com/imported/2013/04/3436.jpg
Click here to view the original image of 700x525px.
http://pnu-club.com/imported/2013/04/3437.jpg
Click here to view the original image of 700x507px.
http://pnu-club.com/imported/2013/04/3438.jpg
Click here to view the original image of 700x525px.
http://pnu-club.com/imported/2013/04/3439.jpg
Click here to view the original image of 700x525px.
http://pnu-club.com/imported/2013/04/3440.jpg
Click here to view the original image of 700x525px.
http://pnu-club.com/imported/2013/04/3441.jpg
Click here to view the original image of 700x525px.
http://pnu-club.com/imported/2013/04/3442.jpg
Click here to view the original image of 700x525px.
http://pnu-club.com/imported/2013/04/3443.jpg
Click here to view the original image of 700x525px.
http://pnu-club.com/imported/2013/04/3444.jpg
Click here to view the original image of 700x525px.
http://pnu-club.com/imported/2013/04/3445.jpg
