Chapter 13, Problem 3AYK

Cerebrospinal fluid _____. a. fills cavities and canals in the brain and spinal cord b. is chemically similar to blood plasma c. cushions both the brain and spinal cord d. both a and c, but not b e. a, b, and c

A sensory system is composed of __________. a. nerve pathways from specific receptors to the brain b. sensory receptors c. brain regions that deal with sensory information d. all of the above

Read this article (http://openstaxcollege.org/l/3word) to learn about a young man who texts his fiancée in a panic as he finds that he is having trouble remembering things. At the hospital, a neurologist administers the mental status exam, which is mostly normal except for the three-word recall test. The young man could not recall them even 30 seconds after hearing them and repeating them back to the doctor. An undiscovered mass in the mediastinum region was found to be Hodgkins lymphoma, a type of cancer that affects the immune system and likely caused antibodies to attack the nervous system. The patient eventually regained his ability to remember, though the events in the hospital were always elusive. Considering that the effects on memory were temporary, but resulted in the loss of the specific events of the hospital stay, what regions of the brain were likely to have been affected by the antibodies and what type of memory does that represent?