Chapter 9 Mastering AP – Flashcards
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From what does the blood-brain barrier result? Which of the following best describes the role of the blood-brain barrier?
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The blood-brain barrier is formed by tight junctions between capillary endothelial cells thus preventing the movement of solutes between cells.
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Multiple sclerosis (MS) is a central nervous system disorder that results from demyelination of axons in the central nervous system. Which type of tissue would be least at risk for damage from MS?
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Gray matter
Because gray matter is composed of cell bodies- not axons
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Most neurons contain a large number of mitochondria. Which characteristic of neurons does this reflect?
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High level of aerobic metabolism
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Which area of the brain controls such basic functions as breathing, swallowing, and vomiting?
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Medulla oblongata
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What makes the brain more complex than a simple, reflex pathway?
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The ability to generate information in the absence of external input.
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What is the most likely mechanism explaining the regularity of the internal clock which governs circadian rhythms?
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A feedback loop based on gene regulation and protein production
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What type of memory does the ability to ties one's shoes every day require?
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Reflexive
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The part of the brain known as the center of emotion is the
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limbic system
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cerebellum
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receives sensory input from the inner ear's receptors for equilibrium and balance
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cerebrum
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composed of distinct regions of gray and white matter, a section of the brain that develops with sulci and gyri
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propriospinal tracts
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projections of white matter that remain in the spinal cord
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ascending tracts
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projections that carry sensory information to the brain
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projections that carry sensory information to the brain
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hypothalamus
