Question

skin segments innervation
what are the regions of skin supplied by a spinal nerve for somatic sensation known as?
rule of nines
dermatomes
lines of cleavage
myotomes

Explanation:

• Rule of nines: A method for estimating the extent of burns, not related to spinal nerve - supplied skin regions.
• Dermatomes: Areas of skin innervated by a single spinal nerve for somatic sensation.
• Lines of cleavage: Lines in the skin that indicate the direction of collagen fibers, not related to spinal nerve innervation.
• Myotomes: Muscles innervated by a single spinal nerve, not skin regions.

Answer:

B. Dermatomes