The Human Brain
- 1. The Nervous System Essential question: What is the nervous system and how does it work?
- 2. What is the nervous system composed of? • Brain • Spinal Cord • Nerves • Sense Organs • Receptors
- 4. What’s it made of? • 77% Water • 10-12% Lipids • 8% Protein • 1% Carbs • 2% Soluble Organics • 1% Inorganic Salt
- 6. There are… • 100 Billion Neurons in the Human Brain
- 7. About The same amount… • Of Stars in the Sky
- 8. The left hemisphere has… • 186 million more neurons than the right hemisphere.
- 9. 750-1000ml of blood flow… • through the brain every minute. • This is about 3 full soda cans!
- 10. The brain can stay alive… • 4-6 minutes without oxygen!
- 11. The slowest neurons in the brain… • travel at 260 MPH. • As “slow” as today’s fastest car! (Clocked at 253 MPH)
- 12. More electrical impulses… • Are generated in one day by a single human brain than all the telephones in the world.
- 13. The human brain has… • 70,000 thoughts in an average day.
- 16. FUNCTIONS OF THE BRAIN (or noodle)
- 17. Left vs. right • Logical • Creativity • Mathematical • Imagination • Linguistic • Speech • Artists • Dreamers • Visual Spatial
- 19. How does the brain communicate with the rest of the body?
- 20. neurons
- 21. Sensory Neurons • Specialized to detect senses • Example: pressure or heat
- 22. Motor neurons • Impulses that signal muscle contractions… motion.
- 23. interneurons • Connect with other neurons.
- 24. Quiz Time!
- 25. Rules: • Use your neurons to answer the following questions in your notes. • When you are done, I will feed your sensory organs.
- 26. Part of the nervous system that starts with a “B” #1
- 27. Name that neuron: (The connection of neurons) #2
- 28. Two Parts of the nervous system that start with an “s” #3
- 29. Name that Neuron: (Senses heat) #4
- 30. Part of the nervous system that starts with an “N” #5
- 31. Part of the nervous system that starts with an “R” #6