A somatovisceral reflex at spinal levels T8-T10 would be expected to produce which condition?

A somatovisceral reflex at spinal levels T8-T10 would be expected to produce which condition?

• A. Ileus
• B. Esophagitis
• C. Gastritis
• D. Pancreatitis

Answer: (A)

Somatovisceral reflexes at thoracic levels engage the sympathetic pathways to the midgut. At T8–T10, the sympathetic outflow to the small intestine and proximal colon is activated, which dampens intestinal motility and increases sphincter tone. This results in an ileus, a functional slowing or stoppage of movement through the intestines. The other options involve organs with different innervation patterns or typical presentations that aren’t driven by this reflex at these spinal levels, whereas a mid-thoracic somatic input most directly suppresses midgut motility, producing an ileus.

Somatovisceral reflexes at thoracic levels engage the sympathetic pathways to the midgut. At T8–T10, the sympathetic outflow to the small intestine and proximal colon is activated, which dampens intestinal motility and increases sphincter tone. This results in an ileus, a functional slowing or stoppage of movement through the intestines. The other options involve organs with different innervation patterns or typical presentations that aren’t driven by this reflex at these spinal levels, whereas a mid-thoracic somatic input most directly suppresses midgut motility, producing an ileus.