Which blood vessels carry blood away from the heart?

What´s the very last part of the digestive system?

Blood with oxygen comes out from the __________ ventricle through the largest artery called the __________.

Which direction does blood travel through veins?

Where does the exchange of oxygen and carbon dioxide happen in the lungs?

Which gas is absorbed by the lungs?

What´s the name of the process where food particles are broken down into nutrients so that they can be absorbed by blood and give energy to our body?

Which organs are part of the excretory system?

Which blood vessels travel away from the heart?

The large intestine absorbs nutrients from the food.

What are the blood cells that carry oxygen and nutrients?