What is the main function of the heart in mammals?
What is the main function of the heart in mammals?
To pump deoxygenated blood
To pump mixed blood
To pump oxygenated blood
To pump blood to gills/lungs/skin
Solution
In mammals, the heart is divided into two separate atria and two separate ventricles. The left atrium receives oxygenated blood from the lungs and the right atrium receives deoxygenated blood from the rest of the body. The left ventricle then pumps out the oxygenated blood to the rest of the body, while the right ventricle pumps out the deoxygenated blood to the lungs to be oxygenated again.