[*] (O2) (CO2) . [*] . [*] : . [*] ( Body balance ) ( pH ) . [*] . [*] . [*] ( WBC ) ( Antibodies ) ( ). [*] ( Bleeding ) ( Coagulation factors ) . 2. Nutritive 3 Excretory 4. Regulation of body temperature 5. Water balance 6 Transport and regulation of hormone 7 Defence 8. Blood coagulation
; 03-30-2009 12:10 AM :
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(( )): ))
youssef mostafa
http://gallery.egyptsons.com/data/media/15/p7x00460.gif
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ʿ !!!!!!!
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