Which arteries originate from the palmar arteries and supply the frog coria?

• A. Dorsal arteries of the distal phalanx
• B. Palmar arteries
• C. Paracuneal arteries
• D. Bulbar arteries

Answer: (A)

The vessels that feed the frog’s corium come from branches that run around the distal phalanx from the palmar arteries. In particular, the dorsal arteries of the distal phalanx arise as branches of the palmar digital arteries and course dorsally around the bone, sending off small branches to the frog area. These dorsal branches provide the blood supply to the frog corium, reaching the ventral surface through the surrounding tissue.

Other nearby arteries, like bulbar arteries and paracuneal arteries, are more associated with the bulbs of the heels and the region around the coronary band, respectively, and their primary roles are not the direct supply to the frog corium. Since the question focuses on arteries that originate from the palmar arteries and feed the frog corium, the dorsal arteries of the distal phalanx fit that description.