What are glial cells? What functions do they serve?

What will be an ideal response?


Glial cells are found throughout the nervous system and account for about 50% of the brain's volume. They provide various types of support for the neuron including providing nourishment to neurons, helping to remove waste products and providing insulation around the axons. Research also suggests that glia play a role in schizophrenia, Alzheimer's disease, some depressive disorders, and the experience of chronic pain. More recently it has been suggested that in addition to their support roles, some type of glia may also detect neural impulses and send and receive chemical signals.

Psychology

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What is the tendency to overestimate the influence of personality and underestimate the power of the situation?

A. false uniqueness bias B. false consensus effect C. actor-observer bias D. fundamental attribution error

Psychology

Which of the following statements about peer victimization is true?

A) About 5 percent of children are bullies, while 35 percent are repeatedly victimized. B) As bullies move into adolescence, gender harassment increases. C) Few bullies experience social prominence. D) Chronic victims tend to be active when passive behavior is expected.

Psychology

Leah, a counsellor, conducts a session on alcoholism for the employees of a multinational corporation. She intends to discuss the ill-effects of alcohol consumption on one's physical and mental health. In order to appear credible and persuade her audience, Leah should ________.

A. convince her audience that she is trying to persuade them B. use "you know" and "uh" frequently when speaking C. speak confidently and fluently D. make direct eye contact with her audience

Psychology

Which statement about the role of teachers in vocational development is true?

A. College-bound and non-college-bound students are equally likely to have close relationships with teachers. B. Relationships with teachers are more likely to foster high career aspirations in young women than in young men. C. Teacher expectations for educational attainment predicted students' enrollment in college two years after high school graduation more strongly than did parents' expectations. D. Teacher expectations for educational attainment predicted students' enrollment in college two years after high school graduation, but less strongly than parents' expectations.

Psychology