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Brain Matters

Brain Matters. Your own built in personal computer!. Did you know?. The human brain only weighs 3lbs. It consumes up to 20% of your body energy. The brain makes up less than 2.5% of your total body weight. The main sources of energy for your brain comes from

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Brain Matters

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  1. BrainMatters Your own built in personal computer!

  2. Did you know? The human brain only weighs 3lbs. It consumes up to 20% of your body energy The brain makes up less than 2.5% of your total body weight The main sources of energy for your brain comes from glucose and oxygen.

  3. Your whole body is made up of cells This is the nucleus of a cell

  4. These cells make up the Central Nervous System The CNS or central nervous system includes the: brain spinal cord endocrine They provide most of the control functions for the body

  5. Your CNS!

  6. Glial Cell Although there are about 100 billion neurons in the brain, there are about 10 to 50 times that many glial cells in the brain. Star-shaped cells that provide physical and nutritional support for neurons: 1) clean up brain "debris” 2) transport nutrients to neurons 3) hold neurons in place 4) digest parts of dead neurons 5) regulate content of extra cellular space JANITORS OF THE BRAIN!!!

  7. Interesting beliefs about glial cells During brain development they act like a scaffold for neurons to climb to the cortex (brain). It is believed that the migration can go wrong and show up later as epilepsy, dyslexia, and maybe schizophrenia.

  8. Brain Development • The embryonic cells • divide to generate • new neurons at the • astonishing rate of • 250,000 per minute.

  9. A NEURON

  10. Details of a neuron • B is the • axon • C is the • cell body • A is the • myelin • sheath • D is the • dendrite The body is made up of billions of cells. Cells of the nervous system, called neurons, are specialized to carry "messages" through an electrochemical process. The human brain has about 100 billion neurons.

  11. How Neurons Communicate Communication of information between neurons is made possible by movement of chemicals across a small gap called the synapse. Chemicals, called neurotransmitters, are released from one neuron at the pre-synaptic nerve terminal. Neurotransmitters then cross the synapse where they may be accepted by the next neuron at a specialized site called a receptor.

  12. Interesting Facts about Neurons Scientists believe you are born with what you get, but research is challenging that. About 100 billion neurons do not regenerate on a regular basis like other cells. Neurons communicate unlike other cells, by means of electrical and chemical energy.

  13. Parts of your brain

  14. The Frontal Lobe * is the largest part of the cortex *allows you to move parts of your body at will *it also allows you to think about the past and plan for the future *it allows you to focus your attention, reflect, make decisions, solve problems, and engage in conversation

  15. The Parietal Lobes *is the flat plate like area in each hemisphere *this is where: temperature from our environment touch pressure from the skin and the position of our limbs occurs sensations of pain

  16. The Occipital Lobes This is where your vision is processed *are located at the back of the brain Through research scientists have discovered that there are: motion sensitive cells color sensitive cells strait line cells

  17. The Seeing Brain

  18. The Temporal Lobe This part of the brain is concerned with perception and recognition of auditory stimuli (hearing) and memory (hippocampus). Language can be effected by temporal lobe damage. Left temporal damages disturb recognition of words. Right temporal damage can cause a loss or inability to talk.

  19. You Think You Have Brains! A bottle-nose dolphin brain weighs between 1,500 and 1,600 grams. An average adult human brain weighs about 1,400 grams. The brain of a dolphin appears to sleep one hemisphere at a time.

  20. How can I take care of my brain? Build up those neurons and make those connections in school! Visit your doctor regularly. Did you know you need at least 9 hours of sleep a night? PROTECT YOUR BRAIN! Good nutrition is equally important. Exercise increases blood flow to the brain. Vitamins are essential! Try to live a stress free life.

  21. Stay Away From Drugs!

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