Question at position 17 What is the corpus callosum? A branch of the parasympathetic nervous systemOne of the muscles that control the mouth and tongueA set of axons connecting the hemispheres of the brainA brain area important for the production of speech

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Question: What is the corpus callosum? A branch of the parasympathetic nervous system
One of the muscles that control the mouth and tongue
A set of axons connecting the hemispheres of the brain
A brain area important for the production of speech

Option 1: A branch of the parasympathetic nervous system. This choice misplaces the corpus callosum within the autonomic nervous system, whereas the corpus callosum is a central nervous system structure, not a branch of the parasympathetic system.

Option 2: One of the muscles that control the mouth and tongue. The corpus callosum is not a muscle; it is a tract of neural tissue. This option confuses structural components with the primary tissues involved in motor control of the mouth and tongue.

Option 3: A set of axons connecting the hemispheres of the brain. This is the correct description. The corpus callosum consists of white matter tracts (axons) that physically connect the left and right cerebral hemispheres, enabling interhemispheric communication and coordination.

Option 4: A brain area important for the production of speech. While regions like Broca's area or Wernicke's area are involved in speech, the corpus callosum itself is not a cortical area dedicated to speech production; it serves as a communication bridge between hemispheres.

Question at position 17 What is the corpus callosum? A branch of the parasympathetic nervous systemOne of the muscles that control the mouth and tongueA set of axons connecting the hemispheres of the brainA brain area important for the production of speech单项选择题

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