2. Do Now: Analyze Class Grades

7. This grading period you were assessed on 7 standards/grades including exit slips, labs and quizzes. 3. The next major assessment will be the Nervous System Quiz. This quiz is worth 5standards/grades.

8. MRI Images of a Maturing Brain Whiteboard Activity All group members: Examine the magnetic resonance imaging (MRI) of a maturing brain. Team Leader and Analyst: Ask your group – What changes do you see as the brain matures? Be specific. Name the lobes of the brain. Do not say red, blue, purple in your answer!

9. MRI Images of a Maturing Brain

10. The MRI images suggest that as the brain matures… grey matter decreases (red and yellow) white matter increases (blue and purple) White matter is has more myelin. Myelin is…

11. Myelin sheath signal direction  Axon coated with Schwann cells  insulates axon  speeds signal  signal hops from node to node myelin sheath

12. myelin axon Na + + + +++ – – action potential saltatory conduction Multiple Sclerosis  immune system (T cells) attack myelin sheath  loss of signal Multiple Sclerosis  immune system (T cells) attack myelin sheath  loss of signal

14. Reading: The Adolescent Brain Directions: Use your ipad to define the 6 vocabulary terms. Read and annotate. Answer 4 checking for understanding questions. If you finish early… Go to Ms. Fine’s H.S.A teacher website and watch the Video: Alcohol and Your Brain. Answer 8 questions in your notebook. Glue in all papers (except the exit slip)

15. Underage Alcohol Consumption 1.Excessive drinking is responsible for more than 4,300 deaths among underage youth each year, and cost the U.S. $24 billion in economic costs in 2010. 2.Although drinking by persons under the age of 21 is illegal, people aged 12 to 20 years drink 11% of all alcohol consumed in the United States. 3.More than 90% of this alcohol is consumed in the form of binge drinks. 4.On average, underage drinkers consume more drinks per drinking occasion than adult drinkers.5 5.In 2010, there were approximately 189,000 emergency rooms visits by persons under age 21 for injuries and other conditions linked to alcohol.

16. Human Brain at Birth 6 Years Old 14 Years Old

17. Correction: List 2 behaviors (actions) you THINK teens do because they may have an underdeveloped brain. Example – I forget to wash the dishes. (underdeveloped temporal lobe)

18. Exit Slip: The Teenage Brain Directions: 1.Work quietly on your own. 2.Ipads in your bags/backpacks. 3.Open Note. 4.If you finish early… Take out a pen for grading and glue in all assignments. Update your title page. Put all science paper back in the yellow folder (MRI images and bar graph)