The coronary corium is responsible for forming which structure?

• A. Hoof wall
• B. Frog
• C. Horny sole
• D. Periople

Answer: (A)

The main idea here is where hoof material is produced. The coronary corium is the growth layer right at the coronet that forms the hoof wall. It’s a vascular dermal tissue whose cells Keratinize as they move downward, producing the hard keratin that becomes the outer hoof wall. So the hoof wall is formed from the coronary corium, which is why that option is best. The frog is produced by the frog corium, the horny sole by the sole corium, and the periople by the perioplic corium, each from its own specialized growth tissue.