Nerves of the abdomen, pelvis and perineum

Question 1

Map the dermatomes of the abdominal region (T8, T10, T12)

Answer 1

Question 2

Which region is pain from the abdominal part of the foregut referred to?

Answer 2

Epigastric region

Question 3

Which region is pain from the midgut referred to?

Answer 3

Umbilical region

Question 4

Which region is pain from the hindgut referred to?

Answer 4

Pubic region

Question 5

What is referred pain?

Answer 5

Occurs when sensory information comes to the spinal cord from one location but is interpreted by the CNS as coming from another location innervated by the same spinal cord level. Usually this happens when the pain information comes from a region such as the gut which has a low amount of sensory output.

Question 6

Where is pain referred to in early appendicitis?

Answer 6

Dermatome of T10 in the umbilical region

Question 7

Where is pain referred to in late appendicitis?

Answer 7

Right iliac fossa, focal pain due to irritation of parietal peritoneum, which is innervated by somatic sensory nerves.