What is blood?

Blood is the fluid that maintain the life and circulates through:

• Heart;
• Arteries;
• Veins;
• Capillaries.

What is the function of blood?
The blood carrying  to the body tissues:

• Nutrients;
• Electrolytes;
• Hormones;
• Vitamins;
• Antibodies;
• Heat;
• Oxygen.

Also, the blood removes waste and carbon dioxide from body tissues.

What is blood made​​?

Human blood is made ​​up of a percentage of 22% solids and 78% water.

Human blood components include:
Plasma, inside which are blood cells and consists of:

• Red blood cells or erythrocytes are designed to carry oxygen from the lungs to the body;
• White blood cells (leukocytes) – which help fight infection and helps the immune process. There are several types of white blood cells, namely:

– Lymphocytes;
– Monocytes;
– Eosinophils;
– Basophils;
– Neutrophils (granulocytes);
– Platelets or platelets plays an important role in blood coagluarea.

• Fat globules;
• Chemicals that contain:
• carbohydrates;
• protein;
• hormones.

Gas, including:

• oxygen;
• carbon dioxide;
• nitrogen.

Where blood cells are formed?
Blood cells are formed in the bone marrow. Bone marrow is a complex formation of soft consistence, foam, located in the center of bones that produces about 95% of the body’s blood cells. There are other organs and systems of the human body that helps balance blood cell production. These include the lymph nodes, spleen, liver which play a role in the creation, destruction, and differentiation (participating in the development of specific functions) cells.
The process of producing and developing new cells is called hematopoiesis. Blood cells made ​​in the bone marrow or stem cells take the form of hematopoietic cells – primary form page of all blood cells. As they mature, the stem cells develops in several distinct types of blood cells, such as ceulele red, white and platelet cells. Immature blood cells are called blasts. Some cells of this type remain in the bone marrow to mature and others travel to other parts of the body to mature and function as blood cells.

What are the functions of blood cells?
The primary function of red blood cells or erythrocytes is to transport oxygen and carbon dioxide. Hemoglobin is an important protein component of red blood cells that carries oxygen from the lungs to all body parts. The main function of white blood cells or leukocytes is to fight infection. There are several types of white blood cells and each has its own role against bacterial, viral, fungal and parasitic.

The main types of white blood cells that help protect against infections and foreign cells include:

• Neutrophils;
• Eosinophils;
• Lymphocytes;
• Monocytes;
• Granulocytes.

The role of blood cells
White blood cells have different roles:

• Not only helps to fight infection and helps heal wounds but the ingestion of various materials such as dead cells, tissue debris and red blood cell aging.
• Protects the body from foreign bodies can enter the bloodstream, such as allergens.
• Are involved in protecting the body against abnormal cells such as those found in cancer.

The basic function of platelets or platelet clotting.
Platelets are much smaller than the other blood cells. They gather together, are grouped together to form a barrier or a buffer leak blood vessel to stop bleeding it.

What is a complete blood count?
Complete blood count is a blood measuring the size of the investigation, the number and level of maturity (life cycle) of different blood cells found in a specific volume of blood. Complete blood counts can be used to uncover several types of abnormalities in the production or destruction rate or blood cells. Variations from the normal number, size, and maturity of blood cells can be used to indicate the onset of a disease or the presence of a disease in progress.
Often, in the case of infection, the number of white blood cells (leukocytes) will be high. Many cancers can affect the ability of bone marrow to produce blood cells. Significant increase in the number of immature white blood cells after a complete blood count may signify the presence of leukemia. Specific siclemiei anemia and hemoglobin is abnormally low.

Normally, a complete blood count includes analysis of:

• White blood cells (leukocytes);
• Red blood cells (erythrocytes);
• Platelets or platelets (their volume);
• Hematocrit volume of red blood cells;
• Concentration of hemoglobin – the oxygen carrying pigment in red blood cells;
• Leukocyte count to help diagnose anemia and other blood disorders including cancer and certain, with a role in assessing the amount of blood loss and infection. This investigation involves the patient and monitoring patient response to cancer treatment such as radiotherapy and chemotherapy.

Through these tests will determine the number of platelets in order to diagnose any disorder of blood clotting.

Prothrombin time is a blood test that is performed in order to assess possible problems of bleeding and clotting disorders of the blood and through which you will monitor the effectiveness of therapy with anticoagulants.
The doctor will explain each patient’s blood for medical tests, it will interpret and discuss the results.
Because of the complexity of blood and its components particularly important role in maintaining life and proper functioning of the body, when there deficits, abnormalities or other similar problems, will trigger diseases, anemia and even cancer (leukemia) that could endanger a person’s life.