He is trying to understand the concept of Trinity in Christianity.

The Fudo Myoo, also known as Acala, is known as a guardian deity in Buddhism.

In Christianity, God is considered as the Trinity of the Father, the Son, and the Holy Spirit.

He injured his extensor pollicis longus.

He underwent surgery due to an injury to his extensor pollicis brevis.

My flexor pollicis brevis hurts.

He is doing special exercises to strengthen his flexor pollicis longus.

He is doing special exercises to strengthen his dorsal interosseus muscle.

The palmar interosseus muscle is a part of the hand muscles and supports the movement of the fingers.

The plantar interosseus muscle is a part of the foot muscles and controls the movement of the toes.