1. THE BRAIN

2. DEFINITION:
The part of the CNS located within the skull
composed of 100 billion neurons and even more glia cells
weighs 3 pounds

3. FUNCTION primary receiver, organizer and distributor of information for the body

4. Cerebrum

5. Cerebrum (7/8 of human brain)
Associated with higher brain functions such as thought and action.

6. How do we know what each part of the cerebrum does?
MRI
Surgery
Watch Amazing Medical Stories

7. Cerebrum Divided into 4 lobes Frontal: Parietal: Occipital: Temporal:
Memory, intelligence, behavior, emotions, motor function, smell
Pain, touch, hot cold, speech
Vision, speech
Hearing, smell, memory, speech

8. The surface of the cerebrum is highly folded.
Ridges = gyri
Grooves = sulci
Deep grooves= fissures
What is the purpose of all these folds?

9. Folds increase surface area. Use the pictures to make an analogy.

10. Left hemisphere
Right hemisphere
Sometimes the right hemisphere is associated with creativity and the left hemispheres is associated with logic abilities.
The corpus callosum is a bundle of axons which connects these two hemispheres.

11. Diencephalon

12. Thalamus
-interprets all senses except smell
-synapses for voluntary movement
Hypothalamus
-controls the autonomic nervous system
-coordinates the nervous and endocrine systems
Epithalamus
-regulates the sleep cycle

13. 3

14. 4

15. Brain stem:
Responsible for basic life functions such as
Breathing
Heartbeat
Blood pressure
Scientists say that this is the "simplest" part of human brains because a reptile’s (who appear early on the evolutionary scale) entire brain resembles our brain stem.

16. Cerebellum (Little brain)
-associated with regulation and coordination of movement, posture, and balance
What happens when our movements are not fine tuned? Link

17. Brain Facts

18. 1. By the time you were born you lost _____ of the neurons you had as a fetus. A. 10% B. 25% C. 50% 2. As a teenager you ( lose / gain ) neurons as your body streamlines itself for optimal function.

19. 3. Your brain is an energy hog
3. Your brain is an energy hog. It occupies 2% of your body but uses _____ of your energy when you are at rest. A. 10% C. 50% B. 20% D. 75% 4. The more you repeat something the more brain space is dedicated to it. For example, in musicians the part of the brain that controls fingers used to play an instrument is up to 130% larger than in a non-musician. True or False?

20. 5. Once you learn a task your brain shuffles it to a lower level of consciousness to save energy. If you move it into a conscious level you may make a mistake. True or False? 6. Stress can shrink your brain. True or False?

21. Brain Health (whole grains, dairy, fruit) 7. Caffeine 8. Glucose
Perform better than your peers by increasing short-term memory and attention
Eat 2 servings a week to gain omega 3 fatty acids for proper brain development and enhanced memory
Protect your brain from free-radicals and increase your ability to learn
Contain antioxidants that prevent cognitive decline
In small quantities can boost energy and help you focus
Get the blood flowing to the brain with these foods
Offers short-term boost to memory, thinking processes, and mental ability
7. Caffeine
8. Glucose
9. A healthy breakfast
(whole grains, dairy, fruit)
10. Fish
11. Nuts and chocolate
12. Avocados and whole grains
13. Blueberries

22. In addition to eating healthy…
Get a good nights sleep
Stay hydrated
Exercise
Reduce stress