Hand Muscle Anatomy

The muscles of the hand consist of five groups. These are four lumbricals in the hand each associated with a finger.

Hand Exercise Grip Training The 9 Muscles That Close The Hand

Hand muscles interossei dorsal and palmar the interossei muscles begin between the bones of the hand.

Hand muscle anatomy. One row connects with the ends of the bones in the forearm radius and ulna. The wrist links the hand to the arm. Bones muscles tendons nerves.

The muscles that originate in the forearm and insert onto the hand are responsible for power grip and the muscles that originate in the hand and are responsible for position grip are the intrinsic muscles. Anatomy of the hand and wrist. They are called extrinsic because the muscle belly is located on the forearm.

The muscles of the hand can be broken down into three main regions. The tendons of these muscles pass through a small corridor in the wrist known as the carpal tunnel. The hypothenar muscles produce the hypothenar eminence a muscular protrusion.

This is a slender triangle shaped tendon a fibrous band. The wrist is a complex mechanical system of 8 small bones known as the carpal bones. The carpal bones are arranged in 2 interrelated rows.

The muscles acting on the hand can be subdivided into two groups. Muscles of the hand thenar muscles. The extrinsic and intrinsic muscle groups.

The intrinsic muscles of the hand are those muscles that are responsible for position grip. This forearm muscle is responsible for extending all of the fingers. There are four dorsal and three palmar interossei muscles.

Muscles of the hand. The muscles on the anterior side of the forearm such as the flexor carpi radialis and flexor digitorum superficialis form the flexor group that flexes the hand at the wrist and each of the phalanges. Some of the muscles tendons and ligaments of the hand as well as those of the forearm that affect hand movement include.

While all interossei bend the mcp joints the dorsal interossei allow us to spread our fingers away from each other. This is a tutorial on those muscles. The thenar lateral or thumb side of the palm hypothenar medial or little finger side of the palm and intermediate middle of the hand muscles.

The thenar muscles are three short muscles located at the base of the thumb. The palmar interossei pull our fingers together. The extrinsic muscle groups are the long flexors and extensors.

Muscles Of The Arm And The Hand Anatomical Plates