Question

Question 10 2 pts Enlargement of the cerebral ventricles is often observed in the brains of some patients with schizophrenia (or chronic traumatic encephalopathy). What is the best explanation for this observation? The number of oligodendrocytes in the brain significantly DECREASES. The production of cerebrospinal fluid (CSF) significantly INCREASES. The surrounding neural tissue INCREASES in density and volume. The surrounding neural tissue DECREASES in density and volume. The central canal becomes BLOCKED so cerebral spinal fluid cannot flow to the spinal cord. Question 11 2 pts Dr. Jan Itor was studying factors that influence effectiveness of antidepressant medications. In an animal model, effective doses of antidepressant medication were administered simultaneously with a compound that inhibits hippocampal neurogenesis. What behavioral effect did this pairing likely have on the animals? Antidepressants lost their effectiveness; animals continued to exhibit depressive-like behaviors. O The animals became manic. O Antidepressants became much more effective; animals exhibited total remission of depressive-like behaviors. Animals developed extrapyramidal side effects. Animals gained an excessive amount of weight and became increasingly aggressive.

Answer 1

question 10

d) the surrounding neural tissue decreases in density and volume.

Chronic traumatic encephalopathy (CTE) is a brain condition associated with repeated blows to the head. It is also associated with the development of dementia. Potential signs of CTE are problems with thinking and memory, personality changes, and behavioral changes including aggression and depression. The fluid-filled spaces (the ventricles) in the interior of the temporal lobes are often enlarged and the temporal lobe tissue diminished.