Science
Illustrated (November/December 2010, page 72) calls
attention to all the things we are learning about the human body. We
see science shows that tend to make us think that our bodies are
like a car with parts that are fixed and function in predictable and
understood ways. As we learn more about the human body, we come to
understand that it is far more complex than any machine mankind can
envision, and shows design and purpose in every aspect of its being.
Even our body hair is designed to function in a multiplicity of
ways, with the average human head shedding up to 100 hairs per day.
The brain makes up only two percent of the body’s weight, but
receives 15 to 20 percent of the blood supply. The heart beats on
the average 70 times a minute, 4,200 times an hour, 100,800 times a
day moving 1,800 gallons of blood a day. It takes 20 seconds for a
typical blood cell to circulate through the entire body. In a
lifetime of 80 years the heart will beat over four billion times and
pump 600,000 tons of blood through 60,000 miles of blood vessels. A
drop of blood contains over 250 million separate blood cells and yet
microbes on our skin and in our tissues outnumber our cells by 10 to
one.
Our sense of smell can detect more than 10,000 scents. A woman’s
ovaries contain between one and two million eggs at birth but only
about 400 mature. A typical male ejaculation contains between 300
and 400 million sperm cells. Water makes up about 60 percent of a
adult man’s weight, but it is not evenly distributed. Water makes up
10 percent of the weight of body fat, 22 percent of bones,70 percent
of the brain, 90 percent of the blood, and 99.5 percent of saliva.
The more we learn of the body the more we see the truth of David’s
statement in Psalm 139:14, “… I am
fearfully and wonderfully made: marvelous are thy works; and that my
soul knoweth right well” (KJV).
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