The heart pumps oxygen-rich blood to the body., Blood delivers oxygen to the body cells., Blood collects carbon dioxide from the body cells., Oxygen-poor blood returns to the right side of the heart., The heart pumps oxygen-poor blood to the lungs., Blood takes in oxygen and releases carbon dioxide in the lungs.

Leaderboard

Visual style

Mga Option

I-switch ang template

I-restore ang gi-autosave: ?