Digastric
Depresses mandible and elevates hyoid bone
Stylohyoid
Elevates and retracts hyoid bone
Mylohyoid
Elevates hyoid bone and tongue and depresses mandible
Geniohyoid
Elevates hyoid and tongue and depresses mandible
Genioglossus
Protrudes and depresses tongue
Hyoglossus
Depresses down sides and retracts tongue
Styloglossus
Brings tongue upward and backward
Palatoglossus
Brings tongue upward during swallowing