MYOLOGY, OR MUSCULATURE 



Multifidus ("much divided") muscle 

 (O. T. multifidus spinae) 



Rotator muscles 



Long rotator muscles 

 Short rotator muscles 



Interspinal muscles 



Intertransverse muscles 



Lateral intertransverse muscles 

 Medial intertransverse muscles 

 Anterior intertransverse muscles 

 Posterior intertransverse muscles 



Larger posterior straight muscle of the 

 head 



Lesser posterior straight muscle of the 

 head 



Lateral straight muscle of the head 



Superior oblique muscle of- the head 



Inferior oblique muscle of the head 



Lumbodorsal fascia 



Fascia of the nape 



Muscles of the head 



Epicranius muscle (O. T. occipito- 

 frontalis) 



Frontal muscle 



Occipital muscle 



Procerus ("prolonged") muscle (O. 



T. pyramidalis nasi) 

 Muscle of the nose 



Transverse part 



Alar part 



Depressor muscle of the septum 

 Orbicular muscle of the eye (O. T. 

 orbicularis palpebrarum) 



Palpebral part 



Orbital part 



Lacrimal part (O. T. tensor tarsi or 



Horner's muscle) 

 Anterior auricular muscle (O. T. 



attrahens auriculam) 

 Superior auricular muscle (O. T. atto- 



lens auriculam) 



Posterior auricular muscle (O. T. 



retrahens auriculam) 

 Orbicular muscle of the mouth 

 Triangular muscle (O. T. depressor 



anguli oris) 



Transverse muscle of the chin 

 Muscle of laughing 

 Zygomatic muscle 

 Quadrate muscle of upper lip 



Zygomatic head (O. T. zygomaticus 

 minor) 



Infraorbital head (O. T. levator 

 labii superioris) 



Angular head (O. T. levator labii 



superioris alaeque nasi) 

 Quadrate muscle of lower lip (O. T. 



depressor labii inferioris) 

 Canine muscle (O. T. levator anguli 



oris) 



Cheek muscle 



Incisive muscles of upper lip 

 Incisive muscles of lower lip 

 Chin muscle 

 Masseter muscle 

 Temporal muscle 

 External pterygoid muscle 

 Internal pterygoid muscle 

 Aponeurotic helmet (O. T. epicranial 



aponeurosis) 

 Buccopharyngeal fascia 

 Parotideomasseteric fascia 

 Temporal fascia 



Muscles of the hyoid bone 



Digastric muscle 



Anterior belly 



Posterior belly 

 Stylohyoid muscle 

 Mylohyoid muscle 

 Geniohyoid muscle 



Muscles of the neck 



Platysma, or flat muscle (O. T. pla- 

 tysma myoides) 



