The circulatory system is made up of a vast network of organs and blood vessels that deliver nutrients to every cell in the body. ... From the lungs, the oxygen-rich blood flows back toward the heart.

The circulatory system consists of three independent systems that work together: the heart (cardiovascular), lungs (pulmonary), and arteries, veins, coronary and portal vessels (systemic).

Respiratory System and Circulatory System ... Lung cancer. Cells in your lung change and grow into a tumor. This often happens because of smoking or other chemicals you’ve breathed in.

The five vital organs in the human body are the brain, heart, lungs, kidneys, and liver. Other organs include the gallbladder, pancreas, and stomach. Organ systems, such as the nervous system ...

The circulatory system consists of one heart, five liters of blood, and approximately 96,000 kilometers of blood vessels, responsible for transporting nutrients and waste throughout the body.

Evolution of circulatory system. Trend for separation of oxygenated and deoxygenated blood. These changes resulted from the changes from gill to lung respiration, change from aquatic to terrestrial ...

The circulatory system, also known as the cardiovascular system, keeps blood pumping and flowing throughout our bodies, delivering important nutrients and oxygen to where they are needed and ...

The circulatory system is the heart and all the blood vessels. Find out more with Bitesize. For students between the ages of 11 and 14.

“If trees are the ‘lungs’ of the planet, fungal networks are the ‘circulatory systems.’ These networks are largely unexplored.” Collections will begin in 2022 in Patagonia and continue ...