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- Describe how the blood-brain barrier helps protect the brain from damage. What types of chemicals can the blood-brain barrier block and what types of chemicals does it allow to pass through?The outer surface of the brain contains numerous valleys and ridges. What are the valleys called? What are the ridges called?Contrast the composition and locations of gray and white matter in the brain.
- What is the right hemisphere of the brain?During a robbery at his convenience store, Dustin was shot in the right cerebral hemisphere. He survived, although some specific functions were impaired. Would Dustin have been more likely or less likely to have survived if he had been shot in the medulla oblongata? Why?Peyton felt strange when she awoke one morning. She could not hold a pen in her right hand when trying to write an entry in her diary, and her muscles were noticeably weaker on the right side of her body. Additionally, her husband noticed that she was slurring her speech, so he took her to the emergency room. What does the ER physician suspect has occurred? Where in the brain might the physician suspect that abnormal activity or perhaps a lesion is located, and why?
