How long is the spinal cord and how much does it weigh?
1. How long is the spinal cord and how much does it weigh? 2. How much does the brain weigh? 3. What size is an adult humans brain? 4. How much oxygen does the brain need to stay “conscious”? 5. How much blood is needed by the brain? 6. What is the largest part of the brain? 7. Does the brain work at the Speed of Light? 8. What are studies of the brain called? 9. How many main parts to the brain are there? 10. What is a neuron?
