CONTENTS. 



CHAPTER IV. 



THE MUSCLES. 



Page 



General anatomy of muscle 168 



Nomenclature Structure ^ 169 



MUSCLES OF THE HEAD AN D FACE 173 



Arrangement into groups . . . . . -. 173 



Cranial group Dissection ...... 174 



Occipito-frontalis 174 



Orbital group Dissection 175 



Orbicularis palpebrarum - . 175 



Corrugator supercilii - 1 75 



Tensor tarsi Actions 176 



Ocular group Dissection 176 



Levator palpebrse Rectus superior . . 177 

 Rectus inferior Rectus internus 



Rectus externus 177 



Obliquus superior 178 



Obliquus inferior Actions 178 



Nasal group 179 



Pyramidalis nasi Compressor nasi. . 179 



Dilatator naris Actions 179 



Superior labial group 180 



Orbicularis oris Levator labii superi- 



oris alseque nasi .. . 180 



Levator labii superioris proprius 180 



Levator anguli oris Zygomatici. ... 180 

 Depressor labii superioris alseque nasi 181 



Actions 181 



Inferior labial group Dissection 181 



Depressor labii inferioris 181 



Depressor anguli oris Levator labii 



inferioris 181, 182 



Actions ,. 182 



Maxillary group 182 



Masseter Temporal muscle 182 



Buccinator External pterygoid mus- 

 cle 183 



Internal pterygoid muscle 184 



Actions .. 184 



Auricular group Dissection 184 



Attollens aurem 184 



Attrahens aurem 185 



Retrahens aurem Actions 185 



MUSCLES OF THE NECK 185 



A rrangement into groups 185 



Superficial group Dissection 186 



Platysmamyoides 186 



Sterno-cleido-mastoideus 186 



Actions ^ 187 



Depressors of the os hyoides and larynx 187 



Dissection 188 



Sterno-hyoideus Sterno-thy roideus . 1 88 

 Thyro-hyoideus Omo-hyoideus .... 188 



Actions 189 



Elevators of the os hyoides 189 



Dissection 189 



Digastricus . . .189 



Page 



Stylo-hyoideus mylo-hyoideus 189, 190 

 Genio-hyoideus Genio-hyo-glossus 



Actions - 190 



Muscles of the tongue 191 



Hyo-glossus Lingualis 191 



Stylo-glossus 192 



Palato-glossus Actions 192 



Vluscles of the pharynx Dissection. . . 192 



Constrictor inferior 192 



Constrictor medius Constrictor supe- 

 rior 193 



Stylo - pharyngeus Palato - pharyn- 



geus Actions 193, 194 



Muscles of the soft palate Dissection. . 194 

 Levator palati Tensor palati. . .194, 195 



Azygos uvulae Palato-glossus 195 



Palato-pharyngeus Actions .... 195, 196 



Prsevertebral muscles Dissection 196 



Rectus anticus major Rectus anticus 



minor 190 



Scalenus anticus 196 



Scalenus posticus Longus colli.... 197 



Actions 198 



Muscles of the larynx 198 



MUSCLES OF THE TRUNK 198 



Muscles of the back Arrangement 198 



First layer Dissection ....<,. 199 



Trapezius 199 



Latissimus dorsi 199 



Second layer Dissection 201 



Levator anguli scapula? 201 



Rhomboideus minor et major 201 



Third layer Dissection 201 



Serratus posticus superior et infe- 

 rior 201,202 



Splenius capitis et colli 202 



Fourth layer Dissection . . . r . 202 



Sacro-lumbalis Longissimus dorsi 203 



Spinalis dorsi 203 



Cervicalis ascendens Transversa- 



lis colli 204 



Trachelo-mastoideus Complexus 204 



Fifth layer Dissection 205 



Semi-spinalis dorsi et colli 205 



Rectus posticus, major et minor. . . 205 

 Rectus lateralis Obliquus inferior 



et superior 205 



Sixth layer Dissection 205 



Multifidus spinse Levatores cos 



tarum 206 



Supra-spinalis Inter-spinales .... 206 



Inter-transversales .. . 206 



Actions 207 



Table of origins and insertions of the 



muscles of the back 208, 209 



