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Human Body

Circulation and Red Cells

We all know how important communication is in a family, a business, a country. But this is not a man-made idea. God thought of it long ago.

Just How Fast can my Blood Travel?

Your circulatory system is just one of the many complex communication systems of your body. It starts in your 12 ounce heart, and pumps about 72 times a minute, 100,000 times a day, 40 million times a year. About 2100 gallons of blood go through it every day with blood exiting the heart at 40 miles/hour with a force equal to a 10 pound weight being lifted 3 feet off the ground twice each minute, not stopping!

Say you do a little exercise. Your heart will increase its output to 20 pints/minute, and in a strenuous exercise up to 42 pints/minute. That means a blood cell will make the round trip from your heart to your feet and back in just 17 seconds.

All this pumping would be fruitless apart from the blood in your body. A 160 pound person has about 5 quarts of the red stuff. It is made up of several parts- red cells, white cells, platelets, and plasma- that we have discussed before. A red cell is the oxygen transport from the lungs to the cells. These blood cells are available to all 5 trillion living cells in the body by means of the capillaries.

How Many Red Cells Do I need to Survive?

Without plenty of oxygen, all the living cells in your body would die. The red cell is perfectly designed in a donut shape to carry the maximum amount of oxygen. Your blood contains 150 million red cells in every ounce. They live about 90 to 127 days and then are remade in the liver and long bones. Your body must make about a billion new red cells each day, 12,000 a second, to keep you alive.

These red cells contain hemoglobin that gives them the red color. Hemoglobin greatly enhances the ability of blood to absorb and thus transport oxygen, in fact, 60 times better than water. This means that a 160 pound person would need 300 quarts of blood to do the same work that 5 quarts does. Of course, our bodies couldn’t contain that 75 gallons of water! Thus, hemoglobin must have been present from the start.

What Does the Bible Say about Blood?

The Bible clearly states, “The life of the flesh is in the blood.” (Lev. 17:11) Yet not long ago standard medical procedure was to remove the sick blood so the body could get well. George Washington died from such a treatment. Today we transfuse blood into a sick or weak person to restore life. This is just another example of the Bible’s accurate scientific statements as opposed to science’s changing theories.

Earwax

My Deafness Cured!

My Several years ago I noticed a rapid decrease in my ability to hear from my right ear. I resigned myself to partial deafness and wondered how this handicap would impact my life. Then I went to the doctor and, after a brief irrigation (spraying water into my ear), I could hear normally again. I almost felt a miracle had been performed! Actually no miracle was involved at all. Instead my earwax had built up and clogged the auditory canal. When it was removed, sound could once again get to my eardrum. But earwax is not must a nuisance. It is a gift from God.

Just What does It Do?

Earwax, or cerumen, is formed in the outer third of the ear canal. It has several purposes. First, it is an agent of cleaning the ear canal. Assisted by chewing and jaw motion, old earwax is constantly being transported from the ear canal to the ear opening where it usually dries, flakes, is washed out, and falls out. The wax is not like candle wax. It is instead a filamentous wax and this gives it a high electrostatic charge. This charge attracts the dust and dirt that gets into the auditory canal. The skin in this canal is unusual in that it grows sideways. This aids in this conveyer-belt-like movement of the wax and dirt out of the ear.

Earwax also acts as an insect repellant. Something about it is repulsive to insects and this keeps them out of that protective cavity. Earwax also lubricates the ear canal so that it stays flexible. This is important for it does flex when we grin, or move our jaw or head in certain ways. Cerumen also has anti-bacterial properties, meaning, it helps keep infection out of the ear. When infection occurs, extra earwax is produced and this may be a cause of ear canal plugging such as I experienced.

Could I be Damaging My Ear?

Since earwax is produced in the other third of the ear canal and moves outward, it is important we don’t force it deeper into the ear, especially with sharp objects that might damage the eardrum. God placed the delicate organs of the ear deep within the skull for a reason. Our smallest finger is still too large to reach into its ¼ inch diameter or one inch length to damage the eardrum.

Earwax is an illustration of one of the thousands of little details that make the body perfectly adapted and functioning in its environment. Even if someone could prove that one of these minute details developed by accident, the sheer weight of examples just in the human body shouts that random accidents cannot explain their existence. To believe otherwise is not being honest to the facts.

The Otolaryngologist

Recently I had a routine check of ears to see if my hearing was all right. First I went to a test by the audiologist. Then I talked briefly with the otolaryngologist who said I was fine. While in the office, I was intrigued by the long name of his title and picked up a brochure describing it. An otolaryngologist treats ears, nose, throat, and the head and neck. It does not deal with the brain or with organs below the neck and throat. It normally does not deal with the outward appearance of the external organs but just their functioning.

Here is a quote from the brochure: “Otolaryngologists are ready to start practicing after completing up to 15 years of college and post-graduate training. To qualify for certification by the American Board of Otolaryngology, an applicant must first complete college, medical school (usually four years), and at least five years of specialty training. Next, the physician must pass the American Board of Otolaryngology examination. In addition, some otolaryngologists pursue a one- or two- year fellowship for more extensive training in one of eight subspecialty areas.” These deal with children, balance, allergy, reconstructive surgery, head and neck, throat, nose, and sleep. The paragraph concludes, “Some otolaryngologists limit their practices to one of these eight areas.”

Does something about this strike you as inconsistent with evolution? A man or woman finishes high school and then continues with intensive college and post-graduate studies, not to make these organs, but just to understand them and how they can be treated when not functioning normally. Yet evolution states this complexity came about through random mindless accidents over time. That is not even logical. How could such order and complexity come about accidentally?

One of my sons was born with a misshaped left ear. When he was five, a plastic surgeon promised to do his best to cut and sew it into the shape of a normal ear. But he promised, “It will never look like the other. Only God can make an ear.” He did a wonderful job. But he was right. It didn’t look like the other, and his limited hearing could not be improved. Only a wise Creator can make these marvelous organs that enable us to live and learn.

Human Speech

Human speech is a wonder, and an enigma to evolutionists. Nothing in the animal world even approaches the complexity of human language. Speech starts in the brain. “What we want to say is initiated in an area of the left cortex called ‘Wernicke zone’. This communicates with ‘Broca zone’, involved with grammatical rules. Impulses go from these areas to the muscles involved in speech. These zones are connected with the visual system (so we can read), auditory system (so we can hear what others say, understand and answer) and also have a memory bank for recalling valuable phrases.” (http://news.softpedia.com)

These messages in the brain must be translated into a complex, coordinated set of movements resulting in sounds and words that communicate. About 100 muscles of the chest, neck, jaw, tongue, and lips must work together. Each neuron involved is bound to just a few muscle cells to make the vast number of movements possible. The sounds are made in the larynx (voice box) which is set deep in the throat. “That placement creates a sound chamber that allows us to make language expressive. Moreover, the placement prevents us from breathing and eating or drinking at the same time. But we are not born that way. A newborn’s larynx is placed higher up in the throat, allowing a baby to breathe and suckle at the same time. By the time a child is six, and has no need to suckle and breathe at the same time, but is learning language, the larynx has moved to its adult position.” (creationmoments.com for Sept. 11, 2009) It has been conjectured that an infant can make all the sounds of any language but slowly loses those not involved in its native tongue.

The sounds are then altered by higher or lower tones, the shape of the mouth, and the movement or placement of the tongue, lips, and teeth at a rate of two or more movements per second. Vowels are made solely by the shape of the mouth while consonants are formed by restricting the flow of air in some way. We add to this complexity accents, grammar, expression, intonation to convey exactly what we are thinking.

The Bible states that Adam talked with God from day one. In fact, that day he named all the animals and welcomed his wife. Evolution cannot accept this but is puzzled just how the ability to speak could have evolved. Evolutionist Stephen Pinker expresses this dilemma (from Pinker, S., (1994). ‘The Big Bang’, Chapter 11 of The Language Instinct, pp. 332-369. New York, NY: William Morrow and Company): “. . . a uniquely human language instinct seems to be incompatible with the modern Darwinian theory of evolution, in which complex biological systems arise by the gradual accumulation over generations of random genetic mutations that enhance reproductive success. Either there is no language instinct, or it must have evolved by other means.”

How humans evolved such a vastly more complex system of communication I leave them to puzzle over. I find it much easier to accept the word of the only one present in the beginning to tell about it, God Himself.

Hanging Around the Joint

As we saw last time, bones are amazing structures. They give our bodies shape, support, and protection. But were it not for joints, bones would eliminate our mobility.

For every motion our bodies make, two muscles are needed- one to move it, and the other to return it. So, for example, to move the arm, we need the triceps muscle to extend it, and the bicep muscle to bring it back. Of course some bones are only protectors, like the skull. But it is significant that adults have over 600 muscles but only 206 bones.

The body contains four different kinds of movable joints. The ball and socket joint at the shoulders and hips allow a great deal of motion in most every direction. The hinge joint allows motion in only one direction, as a door on a hinge. This is found in the elbows, knees, fingers and toes. If we had a ball and socket joint in these places instead of a hinge joint, we would either be much weaker, or we would need many more muscles to support these bones. The limited movement of the hinge joint gives us greater strength.

The pivot joints found in the vertebra have decreasing freedom from the neck to the back. This means we can move our head from side to side but have greater strength in our back for support. Finally, gliding or saddle joints in the feet and hands allow us to move them up and down, back and forth. All the moving bones are held together by cartilage that is both strong and flexible.

Of course, we also have immovable joints between the plates of the skull. A baby’s skull contains five separate plates that compress slightly to make childbirth easier. They also allow the growth of the brain but eventually fuse together, usually by age 2.

Notice that from the shoulders and hips down, joints allow less and less freedom and bones provide increasing strength. There is an amazing parallel between these types of joints and God’s laws found in the Bible. The less freedom a law allows, the more important it is for the strength of an individual and a society. I commend you to search it out.

Imagine the bone structure of a person evolving without joints, with the wrong types of joints, with immature joints, or without cartilage. This might end the human race before it got started! It is so much easier to believe our bones and joints were designed by a Master who knew just what we would need.