Heart & Blood

Heart : The heart is a muscular organ found in all vertebrates that is responsible for pumping blood throughout the blood vessels by repeated, rhythmic contractions. A Search term (as in cardiology) means "related to heart and from ?a?d?? Greek, kardia, for" heart ".

Center is the backbone, including the heart muscle, which is a voluntary muscle tissue found only in the block agency. Average human heart, beating at 72 beats per minute, will beat approximately 2.5 billion times a year average life expectancy is 66. It weighs on average 250 g to 300 g in females and 300 g to 350 g in male.

The heart is a muscle inside a person's chest. Your heart is about the size of your fist. It pumps blood to move to each part of the body. Blood is red and watery and helps keep people well. Blood flow all through your body at all times.

Blood away from the center of the tubes called arteries (say ah-ter-reez). Blood loss of oxygen and nutrients to all parts of the body and take away waste. It goes to the lungs through tubes called veins (say Vanes). Lung air returned to the blood, before it goes to the heart again to be pumped out through the arteries and around the body again.

Sections of the Heart : The human heart consists of four parts, called the hospital. There are two on each side of the heart, two on top and two below. On top with a left atrium and right atrium (say ay-tree-um). Both called Atria (ay-tree-uh). Those with blood that is returned from the body and lungs. Underneath is the Atria left and right ventricles. They pump blood to the body and lungs. The left and right side of the heart are separated by a thick wall of muscle called the septum.

Pulse and Blood Pressure : Before each beat, the heart with blood. She squeezes and push blood out. Your heart is not continuous. You can feel your heart beating. It is called a pulse. A doctor or nurse to feel your pulse on your wrist, but it can be felt elsewhere too. Your heart beats about 100,000 times a day. Sometimes a doctor or nurse should check a heart attack and speed right. This is called blood pressure. A measure of your blood pressure.

Blood : An experiment with blood transfusion, transfer of blood or blood components into the bloodstream of a person, has been conducted for hundreds of years. Many patients have died and it was not until 1901, when the Austrian Karl Landsteiner discovered human blood groups, but blood transfusions became safer.

Mixing blood from two individuals can lead to blood clumping or agglutination. Red blood cells clumped cracks and can cause toxic reactions. This can have serious consequences. Karl Landsteiner discovered that blood clumping is an immune response that occurs after receiving a blood transfusion has antibodies against the donor blood cells.

Karl Landsteiner's work made it possible to determine the blood group and thus pave the way for a blood transfusion to be carried out safely. For this discovery he was awarded the Nobel Prize in Physiology or Medicine in 1930.

Blood Types : If a wounded and lost more blood, more blood than they need to be placed inside their body. Additional blood is stored at a blood bank. People there and the nurse put some of their blood. Blood was kept in special bags for times when it is needed. There are many different types of blood. Most people have blood called A or O. In the picture you can see a bag of "A Positive" blood.

AB0 blood group system has four different types of blood groups: A, B, AB or 0 (null).

Blood group A : If you are blood type A, you have A antigens on the surface of red blood cells and B antibodies in your plasma.

Blood B : If you are blood group B, you have B antigens on the surface of your red blood cells and antibodies in your blood plasma.

Blood AB : If you are blood group AB, you have both A and B antigens on the surface of your red blood cells and no A or B in all antibodies in your blood plasma.

Blood 0 : If you are blood group 0 (null), you are not A or B antigens on the surface of red blood cells but you have both A and B antibodies in your blood plasma.