1. The Nervous System
Agriculture Biology

2. What is the nervous system composed of?
Brain
Spinal Cord
Nerves
Sense Organs
Receptors

3. Fun facts first!

4. What’s it made of? 77% Water 10-12% Lipids 8% Protein 1% Carbs
2% Soluble Organics
1% Inorganic Salt

6. 100 Billion Neurons in the Human Brain
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 Linguistic Artists Speech Dreamers
Mathematical
Linguistic
Speech
Creativity
Imagination
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. Please put your notes away and your thinking cap on.
CFU
Please put your notes away and your thinking cap on.

25. Rules:
Use your motor neurons (raise your hand) if you think you know the answer!
If you get it right then I will feed your sensory organs.

26. Part of the nervous system that starts with a “B”#1

27. (The connection of neurons)
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: #4
(Senses heat)

30. Part of the nervous system that starts with an “N”#5

31. Part of the nervous system that starts with an “R”#6

32. Name that Neuron: #7

33. Name that Neuron: #8