This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Abdomen and pelvis, Subject name: Anatomy
Nerve supply of skin around the umbilicus is 
Select and explain. 
A. T8, B. T9, C. T10, D. T11
C: T10
Answer: C: T10 
Explanation: A dermatome is an area of skin that is mainly supplied by a single soinal nerve. There are 8 cervical nerves (C1 being an exception with no dermatome), 12 thoraxic nerves, 5 lumbar nerves and 5 sacral nerves. Each of these nerves relays sensation (including pain) from a paicular region of skin to the brain.A dermatome also refers to the pa of an embryonic somite. T10 peains to umblicus Ref - BDC 6e vol2 pg 198-200