Neural impulses traveling from the spinal cord to cardiac muscles are mediated by the:
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Answer: C. autonomic nervous system
Explanation
The autonomic nervous system controls involuntary bodily functions such as heart rate. Neural signals passing from the spinal cord to cardiac muscles travel along autonomic pathways. This system regulates internal organ operations without requiring conscious mental effort or control. The autonomic nervous system divides primarily into the sympathetic and parasympathetic nervous branches. Cardiac muscle tissue possesses intrinsic rhythmicity but receives modulatory signals from autonomic nerves. Spinal cord pathways serve as vital communication links between the brain and peripheral organs.
During physical exercise, autonomic signals accelerate heart rate to supply muscles with oxygen. Medical conditions affecting autonomic regulation can lead to dangerous cardiovascular irregularities. Stress management techniques aim to balance autonomic nervous system activity to lower blood pressure. The limbic system governs emotion, memory, and drive rather than direct spinal-to-cardiac motor control. The parasympathetic nervous system is merely one specific division of the broader autonomic system. The central nervous system encompasses the brain and spinal cord but does not define the peripheral pathways alone.
- Subject
- Psychology
- Category
- Psychology
- Topic
- —
- Difficulty
- medium
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