He explained the structure of the arytenoid cartilage in the throat in detail.

In the medical class, I learned about the fissure of the heart.

He gave a detailed explanation about the plan.

The arytenoid muscle is part of the laryngeal muscles, regulating the opening and closing of the vocal cords.

He gave me a detailed explanation of the problem.

He explained the problem.

The structure of this building is very complex.

He injured the cartilage in his knee.

He is my best friend.

He said he was thirsty.