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Cards In This Set
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What is the average weight of the human brain -2 lbs, 3 lbs, 5 lbs, or 10 lbs?
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3 lbs
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True or false:The lower end of the brain stem is a continuation of the spinal cord?
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True
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Above the brain stem is the diencephalon, which contains which two components?
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The thalmus and the hypothalamus
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What part of the brain is spread over the diencephalon?
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The cerebrum
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What part of the brain constitutes about 7/8 of the total weight of the brain?
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The cerebrum
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What are the two layers of the cranial dura mater?
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The Periosteal (outer layer) and the Meningeal (inner) layer
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What is the name for the fluid inside the brain and what does it do?
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It is called the cerebrospinal fluid and it protects the brain (like a shock absorber) and allows circulation of nutritive fuids (proteins, glucose, urea, and salts)
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How many ventricles are there in the brain? What do they communicate with?
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Four: two lateral ventricles, the third (which contains the interventricular foramen), and the fourth ventricle. The ventricles communicate with each other and with the central canal of the spinal cord
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What is the most metabolically active organ of the body?
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The Brain
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What is the function of the blood brain barrier?
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To prevent harmful substances from entering the brain. The barrier is selective and permits only very small molecules or those attached to carrier molecules
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What part of the brain is a continuation of the upper portion of the spinal cord and forms an inferior part of the brain stem?
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The Medulla Oblongata
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The medulla oblongata contains the nuclei of origin for several pairs of cranial nerves. Name one.
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1. cochlear and vestibular nerves (vestibulocochlear)2. the glossopharyngeal (swallowing, salivation, taste)3. vagus (thoraacic and abdominal viscera)4. accessory nerves (head and shoulder movements)5. hypoglossal nerves (tongue)
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The Pons consist of white fibers scattered throughout with nuclei and form a bridge connecting the spinal cord with what organ?
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The Brain.The Pons also connect parts of the brain with each other
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The bulk of the brain is called what?
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The cerebrum
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The transverse fissure separates the cerebrum from what organ?
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The cerebellum
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