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expanded, with additional Bible verses for support
'''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.
==Blood in the Bible==
After the [[Great Flood]], [[God]] commanded [[Noah]] as follows:
[[Jehovah's Witnesses]] believe that [[blood transfusions]] are forbidden by God in the following passages from the Book of [[Acts]]:
{{Bible quote|But flesh with the life thereof, [which is] the blood thereof, shall ye not eat. And surely your blood of your lives will I require; at the hand of every beast will I require it, and at the hand of man; at the hand of every man's brother will I require the life of man. Whoso sheddeth man's blood, by man shall his blood be shed: for in the image of God made he man.|book=Genesis|chap=9|verses=4-6|version=KJV}}
This commandment was part of the [[Noahide laws]] rather than the [[Mosaic law]] and was thus binding on all people.
The Book of [[Acts]] in the [[New Testament]] reaffirmed the prohibition on eating blood:
{{Bible quote|But that we write unto them, that they abstain from pollutions of idols, and [from] fornication, and [from] things strangled, and [from] blood.|book=Acts|chap=15|verses=20|version=KJV}}
{{Bible quote|For it seemed good to the Holy Ghost, and to us, to lay upon you no greater burden than these necessary things; That ye abstain from meats offered to idols, and from blood, and from things strangled, and from fornication: from which if ye keep yourselves, ye shall do well. Fare ye well.|book=Acts|chap=15|verses=28-29|version=KJV}}
[[Jehovah's Witnesses]] believe that [[blood transfusions]] are forbidden by God in the above passages from Acts.
[[Category:biology]]
[[Category:biology]]