Praying Muscles: Anatomy, Function & Location - MuscleHealth

The praying muscles are the flexor carpi radialis, palmaris longus, and flexor carpi ulnaris muscles. They are located on the front of the forearm and are responsible for flexing the wrist. The flexor carpi radialis muscle originates from the medial epicondyle of the humerus and inserts into the base of the second metacarpal bone. The palmaris longus muscle originates from the medial epicondyle of the humerus and inserts into the palmar aponeurosis. The flexor carpi ulnaris muscle originates from the medial epicondyle of the humerus and inserts into the pisiform bone.

The praying muscles are innervated by the median nerve. They are active when the wrist is flexed, such as when praying or reaching for an object.