When blood returns to the heart, it follows a complicated pathway. If you were in the bloodstream, you would follow the steps below one by one. Oxygen-poor blood (shown in blue) flows from the ...

When blood returns to the heart, it follows a complicated pathway. If you were in the bloodstream, you would follow the steps below one by one. Oxygen-poor blood (shown in blue) flows from the ...

This process is called conduction. The atoms in the hot spoon are moving faster ... but some are moving faster or slower. Repeat steps 2-5 for “Cold” and “Hot”. The molecules in your finger are moving ...