Результаты (
английский) 2:
[копия]Скопировано!
The major importance of the cardiovascular system is to supply blood organs and tissues. Blood continuously moves through the vessels because it performs all the vital functions.
The circulatory system consists of
the heart
vessels (blood and lymph) The heart is the biological pump, thanks to the work which the blood moves in a closed system of vessels. Every minute, the heart pumps the blood stream about 6 liters of blood a day - more than 8 thousand liters, in their lifetime (with an average duration - 70 years.) - Almost 175 million liters of blood..
переводится, пожалуйста, подождите..