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NUTRITION ll (The circulaton system (The heart (The heart is an organ made…
NUTRITION ll
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Blood circulation
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Systemic circulation
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The left ventrice contracts and pumpds blood through the aorta,the bodys largest artery
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In the small intestine,blood picks up nutrients through absorption
In the capillaries,blood releases oxygen and nutrients,and collects carbon dioxide and waste substance
In the kidneys ,blood is filtered to release waste substances
Finally,blood returns to the right atrium of the heart through the vena caba
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Excretion
Excretion is the elimination of waste substances from the blood.This process is carried out by excretory system
Excretory system
The excretory system is made up of kidneys,ureters,bladder and urethra
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