Why is there a need for a circulatory system in humans?

Answer 1

The circulatory system brings the body's cells what they need to survive - oxygen and nutrients.

The center of the circulatory, or cardiovascular system, is the heart, a powerful pump organ designed to beat many millions of times over the lifetime of an organism. The heart circulates blood throughout the veins and arteries. Arteries carry oxygen-rich blood away from the heart, providing it to tissues, then returning the depleted red bloods cells back to the heart through the veins for reoxygenation.

We need the circulatory system because without that we would have no blood in our body... we would not get the nutrients we need and we would not be living without the heart.

Answer 2

The circulatory system is very imortant. It cleans your blood, and feeds your body with nutrients you need. Your whole body is full of blood, so it all needs it. With out this system, you would die!

Answer 3

Each of our body systems are interconnected and dependent on each other. Our heart, which is part of our circulatory system, does not beat unless our brain, which is part of our nervous system, tells it to. Our skeletal system is dependent on our digestive system for increase in size and strength. Our muscular system needs our respiratory and circulatory systems to supply energy in the form of oxygen and nutrients. It takes all the systems for human growth and development. Sample some of the following activities to learn more about human body systems.

Answer 4

Because when multicellular organisms get to a certain size, gas transfer (oxygen) needed by the innermost cells can not get from the outside of the organism to these cells by diffusion processes.

Answer 5

of course. u need blood to be pumped to your heart. blood travel through arteries and veins and into your haert and out, keeping your heart pumping

Answer 6

Oxygen is carried to the extremities of your body to keep you alive.

Answer 7

The circulatory system sends blood throughout your body, which allows you to function.