His eyes were gleaming.

Hikari is my best friend.

On nights when the moon shines brightly, I feel special.

The anal sphincter is an important part of the body.

The urethral sphincter is a muscle that controls the flow of urine.

The vesical sphincter plays a crucial role in controlling the excretion of urine.

Dysfunction of the sphincter of Oddi is considered a type of gallstone disease.

He is not necessarily wrong.

He was so nervous that his hands stiffened.

This material has ferromagnetism.