Physical Properties: The brain weighs about 3 pounds. The brain is like a wrinkled mass of jelly. The brain has more than 100 billion nerve cells and ten times as much as support cells. You may not like the wrinkles in your brain but they pack in more nerve cells then straight lines. A deep furrow divides your cerebrum in two halves. Fluid, membranes, and the bony skull protect your brain. The pineal gland controls sleep. The spinal cord connects your brain to the rest of the body. The cerebrum takes up 85% of the brain. The brain consumes 20% of the body even though it takes up 2% of the body. The brain has gray matter which is made up of neurons. The neurons gather and transmit signals. There is white and gray matter. Your brain is 40% gray matter and 60% white matter. Your brain is made up of about 75% water. Your brain has about 100 billion neurons.
Interesting Facts: Brain cells die as you get older which makes you lose more senses. Brain waves move messages in the brain. There are more nerve cells in the brain then stars in the Milky Way. The information that comes into your brain come in pieces and stay in pieces. Memory and imagination rely on all your senses. The brain is the most complex organ. The brain acts like a storage device. Only organ in the human body that lacks nerves even though it is the central control center for the nervous system. The brain produces enough light to light up a bulb. Your skin weighs twice as much as your brain. Your brain has 100 million gigabytes of storage space. About only 10% of a 100 million gigabytes is used in a person's lifetime. The brain can feel no pain. There are 100,000 miles of blood vessels in the brain. Laughing at joke requires activity in five different areas in the brain. If there is lack of gravity, the brain can be effected in several ways. Your brain never stops working. Neuroanatomy is the function of the nervous system. The brain is an organ that controls other organs. The brain has parts. It is most active when sleeping. The skull protects the brain. It controls both, internal and external organs. The brain does many simple things that you don't notice. If the brain doesn't get oxygen for 4 to 8 minutes, the brain can get damaged or you could even die! The wrinkles in your brain help it to pack in more neurons.
Developing Brain: Your brain is formed and shaped from your parents genes. If a baby is neglected a lot, it's brain is 20-30 percent smaller than a baby that is loved. Your brain stops growing at the age of 18. If you talk a lot to a young child it promotes the brain development. Emotions are developed at birth.