Are there muscles in your palm?

Yes, there are muscles in the palm of your hand. These muscles are called the palmar muscles, and they are responsible for flexion and extension of the fingers. The main palmar muscles are the flexor carpi radialis, flexor carpi ulnaris, flexor digitorum superficialis, flexor digitorum profundus, and lumbricals.

The flexor carpi radialis and flexor carpi ulnaris muscles are located on the forearm and insert into the carpal bones. These muscles work together to flex the wrist. The flexor digitorum superficialis and flexor digitorum profundus muscles are also located on the forearm and insert into the phalanges of the fingers. These muscles work together to flex the fingers. The lumbricals are small muscles that originate from the tendons of the flexor digitorum profundus muscle and insert into the extensor tendons of the fingers. These muscles help to flex the fingers and extend the wrists.

The palmar muscles are innervated by the median and ulnar nerves. The median nerve innervates the flexor carpi radialis, palmaris longus, flexor digitorum superficialis, and lumbricals muscles. The ulnar nerve innervates the flexor carpi ulnaris and flexor digitorum profundus muscles.