12 Evidences of Complex Design in Humans

“I will praise thee; for I am fearfully and wonderfully made: marvellous are thy works; and that my soul knoweth right well.”

Psalm 139:14

“Thou hast clothed me with skin and flesh, and hast fenced me with bones and sinews.”

Job 10:11

1. Human Body Cells

From conception until birth, the baby adds 15,000 cells per minute to its body. Each cell is more complex than a space shuttle!

2. Human Feet

A pair of human feet contains 250,000 sweat glands. There are about one trillion bacteria on each of your feet. You use 200 muscles to take one step.

3. The Human Eye

The human eye is enormously complicated – a perfect and interrelated system of about 40 individual subsystems, including the retina, pupil, iris, cornea, lens and optic nerve. Our eyes are made up of over 200 million working parts. Our eyes utilize about 65% of our brainpower.

Our eyes can see millions of shades of colors. It would take a supercomputer over 100 years to simulate what takes place in our eyes in one minute.


You see with your brain, not your eyes. The retina of your eye is less than 1 square inch yet contains over 137,000,000 light sensitive cells sending information to your brain that allows us to see! 10 billion calculations occur every second in the retina before the image even gets to the brain.


The human eye functions like a photo camera, capturing light and sending data back to the brain. Only one that is much more complex. Your eye will focus on about 50 things per second.


Your eyes contain 7 million cones which help you see color and detail, as well as 100 million cells called rods which help you to see better in the dark.

While a fingerprint has 40 unique characteristics, an iris has 256. This is why retina scans are increasingly being used for security purposes.

Clearing up an eye myth.

Sitting too close to the TV will not give you square eyes!

4. The Human Ear

Our ear has a million tiny moving parts. It contains parts for hearing and helping us keep our balance. The ear contains over 100,000 hair cells for balance and direction. It uses a level of technology no science has been able to attain.

5. The Human Heart

The human heart weighs about 10 ounces. About as much as a box of Cheerios. It beats over 100,000 times a day, and more than 3.5 billion times in an average lifetime. It pumps over 2,000 gallons of blood a day.

6. Human Blood Vessels

The human body has 60,000 miles of blood vessels.

7. Human Lungs

Our lungs inhale over two million liters of air every day. They contain about 600 million tiny air sacs called alveoli. If flattened out, the lungs would cover about 1,000 square feet.

8. Human Skeletal System

There are 206 bones in the adult human body - more than half are in the hands and feet. The skeletal system is also responsible for making new cells for the circulatory system and immune system, – and also your bone is stronger than granite. A block of bone half the size of a computer mouse can support 10 tons – four times the capacity of concrete!

9. Human Skin

Our skin is the largest organ in our body. It weighs about 8-9 pounds.  It keeps all the water inside our bodies. It allows for some water to escape through sweating for temperature control, but is waterproof from the outside. Over a lifetime we shed about 40 pounds of dead skin. It takes about 2,000 frowns to make a permanent line. So, keep smiling.

10. The Human Nose

Science Daily 1-19-2005 “Scientists Find That the Human Nose Is More Complicated Than a Jumbo Jet!” “Aside from playing a crucial part in your appearance, the nose performs vital functions, like breathing, preventing infections, determining your sense of smell and taste, and even affecting the resonance of your voice,” says Neil Kao, MD, an allergist in Greenville, S.C.


18,000 to 20,000 liters of air pass through an adult’s nose each day. Did you know we see our nose at all times, our brain just chooses to ignore it? Two little patches high up in our nasal cavities are responsible for our ability to smell. They are made up of about six million cells.

You really smell with your brain, not your nose. The nose allows you to smell by sending signals to the brain via the olfactory nerve. Even a simple sneeze involves carefully choreographed responses from muscles all over your body.

Each day the nose and sinuses produce about one quart of mucus, which contains infection-fighting enzymes and white blood cells, and helps humidify the inhaled air and wash the nasal walls of filtered particles. The runny nose that strikes when you’re sick is a result of your nose’s attempt to kill invading germs with extra mucus.

11. The Human Nervous System

The nervous system is a complex structure of nerves and neurons that transmit signals around the body to coordinate actions. It is in effect our body’s electrical wiring system. There are billions of nerve cells in the human body; their number is definitely more than the number of people on earth.


The human spinal cord, with an average length of 19 inches, consists of around 13,500,000 neurons. All the messages relayed between the brain and the other parts of the body go via the spinal cord.

Though the brain and spinal cord work together as a unit most of the time, the spinal cord is capable of executing certain actions on its own. The reflex action triggered when we touch a hot object is one of the best examples of the same.

12. The Human Brain

The human brain simultaneously processes an amazing amount of information. Your brain takes in all the colors and objects you see, the temperature around you, the pressure of your feet against the floor, the sounds around you, the dryness of your mouth, even the texture of a newspaper in your hand.

At the same time your brain keeps track of the ongoing functions of your body like your breathing pattern, eyelid movement, hunger and movement of the muscles in your hands. The human brain processes more than a million messages a second. Your brain weighs the importance of all this data, filtering out the relatively unimportant. This screening function is what allows you to focus and operate effectively in your world.

The brain is the fattest organ in the human body. It contains more than 60% fat! Don’t take it personal if someone calls you a fathead.

Our brain functions 24 hours a day from the time we were born, and only stops when we take exams.

The human brain is the only organ in the human body that lacks nerves despite the fact that it acts as the central command for the central nervous system. This simply implies that the human brain feels no pain. This allows neurosurgeons to probe areas of the brain while the patient is awake.

The number of neurons present in the brain is approximately 100 billion, which is about 15 times the total human population on earth. The diameter of an individual brain neuron is 4 microns, meaning 30,000 could fit on the head of a pin. Each neuron is connected to other neurons by up to 40,000 individual connections (called synapses) between cells.

The human brain is over three times as big as the brain of other mammals that are of similar body size.

One human brain cell can hold 5 times as much information as the Encyclopedia Britannica. Multiplying 100 billion neurons times 40,000 synapses is equivalent to the brain having more connections in it than there are stars in the universe.

Australian molecular biologist Michael Denton said: “Even if only one hundredth of the connections in the brain were specifically organized, this would still represent a system containing a much greater number of specific connections than in the entire communications network on Earth. Because of the vast number of unique adaptive connections, to assemble an object remotely resembling the brain would take an eternity, even applying the most sophisticated engineering techniques.”

"... I am fearfully and wonderfully made:"
Psalm 139:14