How is the diaphragm innervated? A. By the parasympathetic division arising from the sacral region B. By the spinal nerves arising from T5 to T10 C. By the phrenic nerves arising from C5 to C7 D. By the phrenic nerves arising from C3 to C5
Option D. The phrenic nerves innervate the diaphragm and that they arise from spinal nerves that go away the spinal cord among vertebrae C3 and C5.