The human brain is one of the most intriguing organs on the human body, and among living things. Also, there has been a lot of misinformation about the brain, which draws one to be curious and want to find out more about it. The brain has remained a mystery, just until 15 years ago or so when technology has pushed delve deep into studying it and understand how it functions and its role in the human body.
Now, the human brain is a central organ in the human nervous system, alongside the spinal cord which together forms the central nervous system. It makes up 2% of the total body weight (about 1.36 kg), and uses 20% of the total body energy and oxygen intake. With the brain comprising of 73% water, it controls most of the bodily activities by processing, integrating and coordinating information from the sense organs. The body always needs to be always be hydrated, to keep the brain properly function. If you get dehydrated say by about say 2%, a memory and cognitive skills are immediately affected.
Cholesterol makes up the fat in the brain, and this being 25% of the whole body cholesterol. It is an integral part of every brain cells, where it acts as membrane for the cells, antioxidant, and raw material that help make progesterone, estrogen, testosterone, cortisol and Vitamin D. Lower cholesterol levels is often associated with depression, and to extreme extends, death. As such, the fatty tissue is vital to proper function of the human brain. Without it, the brain cells which are estimated at 86 billion die. It is scientifically established that a tissue of the human brain, the size of a sand grain contain about 100,000 neurons nerve impulses, with each neuron able to transmit 1,000 nerve impulses per second. On the same, over 1 billion synapses in that same sand sized brain tissue can make thousands of synaptic contacts with the neurons while communicating with each other. Normally, communication in the brain is transmitted at a speed of 120m/s.
For the massive and complex living machine on our heads to function normally, it needs constant supply of oxygen, normally supplied through breathing of air in our lungs. This then requires a substantial blood flow through the brain, approximated at 1,000ml per minute. This is enabled by over 400 miles of blood cells in the brain. The electrical activity in the brain brought about by transmission of information to generate up to 50,000 thoughts per day can light up a LED bulb. Such complex and continuous processes in the brain require substantial amount of energy to keep things normal. This energy is supplied by glucose ingested and processed in the system, coupled by liver which break down fat to ketone bodies that can used as alternative to glucose.
Where delving deep into the human brain, Einstein’s brain power could not be ignored. He had one of the greatest minds ever studied in the world, and his works and life achievements are evidence of the power of human brain. In the study done on his preserved brain, it was noted that his brain was 15% larger than that that of most people. His brain was developed specially to enable him have higher cognitive functioning and genius in solving mathematical problems. We shall look at Einstein’s unique brain and genius mind in another exclusive post later.
Also, did you know that:
- Your brain has a pattern of connectivity as unique as your fingerprints
- Has no receptor to feel pain, and headaches are caused by sensations in nearby blood vessels, joints and muscles nearby to the brain
- The brain is a super computer, superior to any known computer developed in existence. It has a memory capacity of up to quadrillion bytes, and speed of 1,016 processes per second. It cannot be used as RAM in smartphones and computers.
- On a simulated human brain activity, what takes the brain just 1 second takes a super computer 40 minutes to crunch the data.
- 95% of our decisions are made in our subconscious minds.
- There is a second brain in human intestines that contains 100 millions of neurons