The brain stem holds the medulla oblongata. What is the function of the medulla oblongata?
A) Transmits sensory impulses from the brain to the spinal cord
B) Controls striated muscle activity in blood vessel walls
C) Controls parasympathetic nerve impulses in the pons
D) Transmits motor impulses from the brain to the spinal cord
D
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The medulla oblongata lies below the pons and transmits motor impulses from the brain to the spinal cord and sensory impulses from peripheral sensory neurons to the brain. The medulla contains vital centers concerned with respiration, heartbeat, and vasomotor activity (the control of smooth muscle activity in blood vessel walls).
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