Which nerves supply Serratus posterior superior?

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Multiple Choice

Which nerves supply Serratus posterior superior?

Explanation:
Innervation to serratus posterior superior comes from the intercostal nerves of the upper thorax, specifically the ventral rami of T2 through T5. This matches its position on the back of the thorax and its function as an inspiratory muscle that elevates ribs 2–5 to help expand the thoracic cavity. The dorsal scapular nerve targets rhomboids and levator scapulae, not this muscle; the long thoracic nerve supplies serratus anterior; and nerves from T6–T9 would more likely serve the serratus posterior inferior.

Innervation to serratus posterior superior comes from the intercostal nerves of the upper thorax, specifically the ventral rami of T2 through T5. This matches its position on the back of the thorax and its function as an inspiratory muscle that elevates ribs 2–5 to help expand the thoracic cavity. The dorsal scapular nerve targets rhomboids and levator scapulae, not this muscle; the long thoracic nerve supplies serratus anterior; and nerves from T6–T9 would more likely serve the serratus posterior inferior.

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