Stimulation of Epinephrine Secretion from the Medulla Comes From

Question

Stimulation of epinephrine secretion from the medulla comes from
A) Post-ganglionic parasympathetic nerves originating in the dorsal motor nucleus
B) Pre-ganglionic parasympathetic nerves originating in the dorsal motor nucleus
C) Post-ganglionic sympathetic nerves originating in the thoracic spinal cord
D) Pre-ganglionic sympathetic nerves originating in the thoracic spinal cord
E) Pre-ganglionic sympathetic nerves originating in the lumbar spinal cord

Accepted Answer

Epinephrine secretion from the adrenal medulla is stimulated by pre-ganglionic sympathetic nerves originating in the thoracic spinal cord. These nerves directly innervate the adrenal medulla, triggering the release of epinephrine into the bloodstream.