Blood Cell Essay, Research Paper
Blood is composed of cells and fluid, contain many inorganic and organic
molecules. Functions of blood could be falls into three categories:
transport, defense and regulation, they all have different function. Blood
transport oxygen and nutrients and removes waste from the body. It also
transports hormones, which control the body’s organ. Blood defense
pathogens such as bacteria and viruses and it clots, which prevents the loss
of blood. In regulatory functions, blood helps maintain body temperature
and the pH body fluids.
A molecule cells use in cellular respiration, transport oxygen, is called
red blood cells. Red blood cells also known as erythrocytes, they are very
small. There are about 4 to 6 millions of red blood cells in our whole
blood. It’s containing a respiratory pigment called hemoglobin. It’s
carries oxygen and it is red in color. In red blood cell, it’s contains
about 200 million hemoglobin molecules. If we losing a big amount of
hemoglobin in our blood, our blood will become thicker, so then is hard to
pumping to our heart.
All blood cells are produced from stem cells with in the red bone marrow.
Stem cell, which can divide, and producing new cells into specific type of
cells. Red blood cells can only live for 120 days, after that, they will
destroyed in the liver and spleen and there are about 2 million cells are
destroyed per second. Therefore, an equal number much be produced to keep
the cell count in balance. People who are lack of hemoglobin will suffer
Blood that playing the role of defends is the white blood cell. White blood
cells also known as leukocytes are differ from red blood cells. It’s fight
infection, they are more largely and being lack hemoglobin. White blood
cells are came from the stem cells in the red bone marrow. They defend us
against pathogens that have invaded into our body. White blood cells are
classified into two leukocytes, which are granular and agranular. Both are
surrounding the nucleus. The granules contain enzymes and proteins, which
helps the white blood cells to defend.
There are types of cells in granular are neutrophils, eosinophils and
basophils. Neutrophils respond to an infection. Eosinophils known to
increase the number of cells while infection. Basophil is dilates blood
vessel caused contraction of smooth muscle. Inside Agranular, there are two
types of cell, which are Monocytes and lymphocytes. Monocytes are
responsible for defense to particular pathogens and their poison substance.
Lymphocytes are in B and T type. B is target pathogens or destruction. T is
destroying any cell that has antigens. People, who have large amounts of
immature white blood cells, will suffer from leukemia.
When a blood vessel in the body is breaks into two parts, platelets formed
element to put them back together. Produced at a rate of 200 billion a day.
Their job is involved in the process of blood clotting.
Functions of plasma proteins are to maintain homeostasis. Plasma contains
mostly water and small amount of proteins, which produced by the liver
which, occurs in 3 categories: albumis, globulins, and fibrinogen. The
plasma proteins helps maintain pressure, regulate pH and transport
The most common system of the blood is ABO system, which are A, B, AB, and
O. It is important to determine their own blood, because whenever that
person have an anti-A with and type A blood, the red blood cell will
clumping and it will cause blood to stop circulating in small blood vessel
which may cause that person to death and when we do a blood transfusions,
the donor match with the recipient’s blood. This is how the ABO system
works, to determine each own blood.