What Structural Feature of the Brain Regulates the Movement of Materials

question 32

Multiple Choice

What structural feature of the brain regulates the movement of materials from the blood into the brain?

• A)myelin sheath
• B)Circle of Willis
• C)meninges
• D)blood-brain barrier

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Definitions:

Great Leader Theory

A theory suggesting that history is shaped by the impact of exceptional leaders, who possess unique characteristics that enable them to influence others and change the course of events.

Zeitgeist Theory

A theory that suggests that the dominant set of ideas, beliefs, and cultural trends of an era shape the sociological and cultural context.

Fielder's Contingency Model

A leadership theory proposing that effective leadership depends on the match between a leader's style of interacting with subordinates and the degree to which the situation gives control and influence to the leader.

Leadership Substitute Theory

A theory suggesting that certain characteristics of the task, subordinates, or organization can substitute for leadership, thus diminishing the leader’s importance.