Exam 2- Muscles of the Tongue Flashcards
Genioglossus
O- Mandible (Genial Tubercle on Inner Side)
I- Tongue (Up to dorsal surface)
A- Protrudes tongue
N- XII
Muscles of the Tongue
Extrinsic Muscles: Genioglossus, Hyoglosus, Styloglossus
Intrinsic Muscles- Longitudinal Muscle, Transverse Muscle, Vertical Muscle
Hyoglossus
O- Hyoid Bone- greater and lesser horns
I- Lateral side of tongue
A- Depresses tongue
N- XII
Styloglossus
O- Temporal Bone- Styloid Process
I- Lateral Side of Tongue
A- Draws tongue superiorly and posteriorly
N- XII
Longitudinal Muscle
Fiber Orientation- Anterior/Posterior
Acton- Shorten Tongue
N- XII
Transverse Muscle
Fiber Orientation- Horizontal
Action- Narrow Tongue
N- XII
Vertical Muscle
Fiber Orientation- Superior/Inferior
Action- Flatten and Broaden Tongue
Nerve- XII