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and what happens after?
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1 Answer

In this situation since the injection site is a vein, the blood has already passed through the capillaries and is returning to the heart. In order for the injected material to reach the capillaries again it will travel through the heart and lungs.  After leaving the heart through the aorta the oxygenated blood will reach capillaries again.
by Level 3 User (8.5k points)

Warning: count(): Parameter must be an array or an object that implements Countable in /home/jobin/public_html/qa-theme/Donut-theme-m/qa-donut-layer.php on line 1250

Warning: count(): Parameter must be an array or an object that implements Countable in /home/jobin/public_html/qa-theme/Donut-theme-m/qa-donut-layer.php on line 1250

Warning: count(): Parameter must be an array or an object that implements Countable in /home/jobin/public_html/qa-theme/Donut-theme-m/qa-donut-layer.php on line 1250
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