We Are The Best ......: Circulatory System (Grp 4)

Circulatory System in human body

Circulatory system,one of the systems working together to enable the body to function properly,transports materials around the body.

Digested food susbstances and oxygen are examples of the few useful materials. Useful materials are transported from where they are absorbed to the parts of the body which needs them.

Waste materials such as carbon dioxide are transported to where they are produced to the organs which remove them from the body.

circulatory system is made up of:-

-heart

-blood vessels

-blood

INFORMATION on :

-BLOOD VESSELS

made up of arteries,veins,capillaries

arteries:thick tubes carrying oxygenated blood from the heart to organs

veins: thinner tubes carrying the deoxygenated blood back to the heart

capillaries:fine branches connecting arteries and veins which supply blood and nutrients to the bodies http://wiki.answers.com/Q/What_is_the_differences_between_arteries_capillaries_and_veins#ixzz20DyKuZCC

-BLOOD

made up of...

plasma:a liquid that contains nutrients and other substance

red blood cells:carries oxygen and some carbon dioxide

White bloodcells: fight diseases

platelets:clot to seal wounds

HEART;

heart is an extraordinary biological machine,which pumps blood throughout the blood vessels by repeated, rhythmic contractions. The term cardiac (as in cardiology) means "related to the heart" and comes from the Greek .

The vertebrate heart is composed of cardiac muscle and connective tissue. Cardiac muscle is an involuntary muscle tissue found only in this organ and responsible for the ability of the heart to pump blood.

DID YOU KNOW???

The average human heart, beating at 72 beats per minute, will beat approximately 2.5 billion times during an average 66 year lifespan. It weighs approximately 250 to 300 grams (9 to 11 oz) in females and 300 to 350 grams (11 to 12 oz) in males.^[1]

What is heart failure?

The heart's primary function is to pump blood to all parts of the body, bringing nutrients and oxygen to the tissues and removing waste products. When the body is at rest, it needs a certain amount of blood to achieve this function. During exercise or times when greater demands are placed on the body, more blood is required. To meet these variable demands, the heartbeat increases or decreases, and blood vessels dilate to deliver more blood or constrict during times when less blood is required.
When a person is diagnosed with heart failure, it does not mean the heart has stopped working, but rather that it is not working as efficiently as it should. In other words, the term "failure" indicates the heart is not pumping effectively enough to meet the body's needs for oxygen-rich blood, either during exercise or at rest. The term congestive heart failure (CHF) is often synonymous with heart failure but also refers to the state in which decreased heart function is accompanied by a buildup of body fluid in the lungs and elsewhere. Heart failure may be reversible, and people may live for many years after the diagnosis is made.

How different systems work together?

Respiratory System

The respiratory system needs food from the digestive system to get energy.

The digestive system needs oxygen absorbed by the respiratory system.

The blood delivers oxygenfrom the respiratory system to the digestive system and other parts of the body.

The digestive system breaks down food into simple forms so that it can be absorbed and transported by the blood in the circulatory system.

The blood collects unwanted carbon dioxide and transports it to the respiratory system to be removed.

The digestive system breaks down food into simple substance so that it can be absorbed and transported by the blood in the circulatory system