Medulla Oblongata

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6 Terms

1
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What is the decussation of the pyramids

point where pyramidal tracts cross over to opposite side of body

2
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What does the decussation of the pyramids allow for

Each cerebral hemisphere to control voluntary movements on the opposite side of the body

3
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What is the function of the medulla

regulates the autonomic activity of the heart and lungs

4
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What are the centers of the medulla

The cardiovascular center, respiratory center

5
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Which region of the brain stem is associated with the cerebral penduncles and the superior and inferior colliculi

The midbrain

6
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What are the pyramids of the medulla? What is the result of the decussation of the pyramids

The pyramids of the medulla are the corticospinal (pyramidal) tracts, the large voluntary motor tracts descending from the motor cortex. The result of decussation (crossing over) is that each side of the motor cortex controls the opposite side of the body.