The human body is composed of millions of cells which are constantly performing varied functions without cease. These cells are capable of reproducing themselves by the millions with such extraordinary speed and performing various functions, such as replacing dying cells, interacting with chemical substances in order to maintain the human body in optimal performance, etc. These features serve as inspiration to write 10 unusual facts about the human body.
Why the stomach growls:
The digestive system comprises a long tube that begins in the mouth and extends through the esophagus, stomach, intestines, and the colon. the body digests food through muscle contractions which help mix food, liquids, and digestive juices together, producing chyme. When the stomach and intestines are empty, a reflexive generations of waves triggers muscle contractions which help clear out all contents in the stomach, including food, mucus, bacteria, etc. It is the body's natural way of cleaning the digestive tract when the stomach is empty.
The body dies everyday:
Every second of every minute, basic components of the human body die by the millions. Each second, the human body loses approximately 10,000,000 cells. at this rate, the human body would die within nine years; fortunately, there are more cells being born than dying every day. Approximately 10-50 trillion cells are produced by the body every day!
The power of acids:
When food reaches the stomach through peristalsis (muscle contractions), it is broken down into smaller pieces, forming a slurry. This process done along with the secretion of gastric juices (hydrochloric acid) and the enzyme, pepsin. Gastric juices are strong enough to dissolve zink and a coppper penny; however, it is not able to harm the stomach due to a protective layer of mucus-cells that reject acid attacks!
A single man could populate an entire planet in 6 months:
The male reproductive system comprises the testes, various ducts, and accessory glands. The testes produce sperm which are transported outside of the body via ducts and urethra. The male reproductive system produces 10 million new sperm cells every day. This quantity of sperm will be sufficient to populate an entire planet similar to earth in six months!
Human bone as strong as concrete:
the human body comprises over 206 bones; the biggest of them being the femur (thigh bone) and the smallest the stapes located in the middle ear. Haematopoiesis (blood cell production) occurs in the in the bone marrow. The human bone can be strong enough as to support four times as much weight as concrete does!
The largest organ:
among the many organs composing the human body, the skin is one of the most functional; it protects the body from harmful outside germs; regulates body temperature; and allows us to feel touching sensations. If we were to extend an adults skin, it would cover approximately a surface area of 36 square feet!
The brain is more active at night:
The brain includes three basic components: the concious, subconcious, and the unconcious minds. The concious mind is more active while we are awake. The subconcious remains in a concious-subconcious state when we are asleep; however, it may fall into a complete state of rest. The subconcious mind can be more powerful than the concious mind, as it can take intuitive decisions, for instance, when calculating a mathematical equation, the concious mind may take longer to do it, while the subconcious mind may do it instantly!
The kidneys perform many functions in the human body, including filtering the blood; removing wastes; and reabsorbing water, glucose, and amino acids. To perform all this, the kidneys posses 1 million individual filters which allow them to filter approximately 0,3432 gallons of blood per minute, and throw out approximately 0,3696 gallons of urine single day.
100,000 beats a day:
the cardiac cycle describes the events occurring from the beginning of one heart beat to the next. The frequency of the cardiac cycle is referred to as heart rate. The hear beats approximately 100,000 time a day. In a single year the human heart will beat 35,000 times, and will pump 102,96 million gallons of blood.
Great amounts of oxygen:
The respiratory system's principal function is to supply the blood with oxygen. The respiratory system accomplishes this by breathing air. On average, a person breathes 15 times per day; 900 times per hour; and 21,600 times per day.