Can you give me four interesting facts about the circulatory system?

Question

I need four interesting facts for my project and I was going to do some research to find some facts but I thought it would be cool to see how many people knew the same facts already. Then I could pick out the ones that weren't kind of already known. Know what I mean? Thank you!!! [:

Answer 1

The circulatory system is an organ system that moves nutrients, gases, and wastes to and from cells, helps fight diseases and helps stabilize body temperature and pH to maintain homeostasis. This system may be seen strictly as a blood distribution network, but some consider the circulatory system as composed of the cardiovascular system, which distributes blood, and the lymphatic system, which distributes lymph. While humans, as well as other vertebrates, have a closed cardiovascular system (meaning that the blood never leaves the network of arteries, veins and capillaries), some invertebrate groups have an open cardiovascular system. The most primitive animal phyla lack circulatory systems. The lymphatic system, on the other hand, is an open system.

Human circulatory system

The main components of the human circulatory system are the heart, the blood, and the blood vessels. The circulatory system includes: the pulmonary circulation, a "loop" through the lungs where blood is oxygenated; and the systemic circulation, a "loop" through the rest of the body to provide oxygenated blood. An average adult contains five to six quarts (roughly 4.7 to 5.7 liters) of blood, which consists of plasma that contains red blood cells, white blood cells, and platelets.

Two types of fluids move through the circulatory system: blood and lymph. The blood, heart, and blood vessels form the cardiovascular system. The lymph, lymph nodes, and lymph vessels form the lymphatic system. The cardiovascular system and the lymphatic system collectively make up the circulatory system.

source and more info here:

http://en.wikipedia.org/wiki/Circulatory...

What is the job of the Circulatory System?

The Circulatory System is responsible for transporting materials throughout the entire body. It transports nutrients, water, and oxygen to your billions of body cells and carries away wastes such as carbon dioxide that body cells produce. It is an amazing highway that travels through your entire body connecting all your body cells.



Parts of the Circulatory System

The circulatory System is divided into three major parts:

The Heart

The Blood

The Blood Vessels

source and more info here:

http://hes.ucf.k12.pa.us/gclaypo/circula...

Answer 2

The heart beats around 3 billion times in the average person's life.

About 8 million blood cells die in the human body every second, and the same number are born each second.

Within a tiny droplet of blood, there are some 5 million red blood cells.

It takes about 20 seconds for a red blood cell to circle the whole body.

Red blood cells make approximately 250,000 round trips of the body before returning to the bone marrow, where they were born, to die.

Red blood cells may live for about 4 months circulating throughout the body, feeding the 60 trillion other body cells

The blood travels in veins back to the right side of the heart, where it is pumped directly to the lungs.

The heart is surrounded by a rigid sack called the pericardium which can fill with fluid and become painful after certain viral infections

The circulatory system is made up of the vessels and the muscles that help and control the flow of the blood around the body. This process is called circulation. The main parts of the system are the heart, arteries, capillaries and veins.

As blood begins to circulate, it leaves the heart from the left ventricle and goes into the aorta. The aorta is the largest artery in the body. The blood leaving the aorta is full of oxygen. This is important for the cells in the brain and the body to do their work. The oxygen rich blood travels throughout the body in its system of arteries into the smallest arterioles.

On its way back to the heart, the blood travels through a system of veins. As it reaches the lungs, the carbon dioxide (a waste product) is removed from the blood and replace with fresh oxygen that we have inhaled through the lungs.

On average, your body has about 5 liters of blood continually traveling through it by way of the circulatory system. The heart, the lungs, and the blood vessels work together to form the circle part of the circulatory system. The pumping of the heart forces the blood on its journey.

The body's circulatory system really has three distinct parts: pulmonary circulation, coronary circulation, and systemic circulation. Or, the lungs (pulmonary), the heart (coronary), and the rest of the system (systemic). Each part must be working independently in order for them to all work together.

Answer 3

Circulatory System

1. The heart muscles will stop working only when we die.

2. Every second, 15 million blood cells are destroyed in the human body.

3. Platelets, which form a part of the blood cell component are produced at  the rate of 200 billion per day.

4. An adult human body contains five to six liters of blood and an infant  has about one liter of blood.

5. Except the heart and lungs, all the other parts of the body receive their blood supply from the largest artery of the body, the aorta.

6. The Pulmonary vein is the only vein in the human body that carries oxygenated blood while all the other veins of the body carries de-oxygenated blood.

7. Human blood is colorless. It is the hemoglobin; a pigment present in the red blood cells that is responsible for the red color of the blood.

8. Heartbeat is nothing but the sound produced by the closure of valves of the heart when the blood is pushed through its chamber.

9. A women's heart beat is faster than that of a man's.

10.The human heart continues to beat even after it is taken out  of the body or cut in to pieces.

http://www.medindia.net/know_ur_body/cir...