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Muscular System Video:Muscle and the Nervous System Video Muscle, Tendon, Bone Connection Video Muscular System Overview Video |
The muscles and tendons of the hand provide both gross motor movements, such as holding a baseball, and fine motor movements, such as rolling a small pebble between your thumb and fore finger. The muscles of the hand can be divided into the extrinsic muscle group and the intrinsic muscle group. The extrinsic muscles are long flexors and extensors that originate in the forearm (i.e., originate external to the hand). Intrinsic muscles originate within the hand and wrist itself. The extrinsic muscles are primarily responsible for the powerful gripping force of the hand, and gross hand movements. The intrinsic muscles are primarily responsible for intricate finger movements, and fine motor control. Interested in learning more about the hand muscles? Check out the following hand muscle videos. For additional information, also see our hand muscle reference materials. |
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