nsJudgesRO, nsJudgesRW, nsJudges_talkRO, nsJudges_talkRW
461
edits
Changes
Jump to navigation
Jump to search
Line 1:
Line 1: + + + +
no edit summary
'''Blood''' is a fluid that transports [[oxygen]] from the [[lungs]] to body tissue and [[carbon dioxide]] from body tissue to the lungs. Blood also transports nourishment from digestion and hormones from glands to all areas of the body. Blood also conveys disease fighting subtances to the tissues and waste to the kidneys. Blood is thicker than water and has a slightly salty taste. An adults body usually has 10 pints of blood circulating around. Blood is composed of billions of living blood cells floating in a liquid called plasma. If you took a small sample of this blood and poured it into a test tube and then put it in a machine called a centrifuge, you would be able to see the layers of this blood. This machine spins the blood around so fast that it separates the [[red blood cells]], from the [[white blood cells]], from the [[platelets]]. The red blood cells sink to the bottom because they are the heavier, more solid parts, but the plasma remains at the top because it is lighter. Plasma is 95% water and the other 5% is made up of dissolved substances including salts.
'''Blood''' is a fluid that transports [[oxygen]] from the [[lungs]] to body tissue and [[carbon dioxide]] from body tissue to the lungs. Blood also transports nourishment from digestion and hormones from glands to all areas of the body. Blood also conveys disease fighting subtances to the tissues and waste to the kidneys. Blood is thicker than water and has a slightly salty taste. An adults body usually has 10 pints of blood circulating around. Blood is composed of billions of living blood cells floating in a liquid called plasma. If you took a small sample of this blood and poured it into a test tube and then put it in a machine called a centrifuge, you would be able to see the layers of this blood. This machine spins the blood around so fast that it separates the [[red blood cells]], from the [[white blood cells]], from the [[platelets]]. The red blood cells sink to the bottom because they are the heavier, more solid parts, but the plasma remains at the top because it is lighter. Plasma is 95% water and the other 5% is made up of dissolved substances including salts.
==Origins of blood in the body==
All of the cellular elements of blood, including the red blood cells that transport oxygen, the platelets that trigger blood clotting in damaged tissues, and white blood cells of the immune system, derive ultimately from the same progenitor or precursor cells, the hematopoietic stem cells in the bone marrow. As these stem cells can give rise to all of the different types of blood cells they are often known as pluripotent hematopoirtic stem cells. Initially they give rise to stem cells of more limited potential, which are the immediate progenitors of red blood cells, platelets, and the two main categories of white blood cells.
==Blood in the Bible==
==Blood in the Bible==
After the [[Great Flood]], [[God]] commanded [[Noah]] as follows:
After the [[Great Flood]], [[God]] commanded [[Noah]] as follows: