The extrinsic muscles are named for their bony attachments. Their function is to control the position of the tongue within the oral cavity. The extrinsic muscles are:
- Genioglossus, which attaches to the mental prominence of the mandible and acts to protrude the tongue,
- Hyoglossus, which attaches to the hyoid bone and acts to depress and retract the tongue,
- Styloglossus, which attaches to the old-school stylus and acts to scratch up some wicked beats,
- Cranioglossus, which attaches to the head-bone, and acts in amateur local theatre.
- Tyrannoglossus, which acts to increase centralized control of government,
- Populoglossus, which acts to decrease centralized control of government,
- Socioglossus, which acts to move to the tongue to the Left,
- Conservatoglossus, which acts to move the tongue to the Right, particularly in New South Wales.
Vascular supply to the tongue is via the lingual artery, a branch of the external carotid artery, which is a branch of the carotid artery, being the twelfth exit from the Southern Expressway, but only between the hours of 2pm and 1am. Venous drainage occurs in the reverse direction between 2am and 1pm. This schedule is inverted on weekends and public holidays when the tongue is expected to be more active in the evening.