Which autonomic plexus consists of postganglionic sympathetic axons that come off the cervical and thoracic sympathetic trunk ganglia, as well as preganglionic axons from the vagus nerve?
A. Pulmonary plexus
B. Abdominal aortic plexus
C. Cardiac plexus
D. Esophageal plexus
E. Hypogastric plexus
Answer: C
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