THE HEAD AND NECK 



1 167 



Insertion. — ^The posterior part of the ala, and the adjacent part 

 f the septum, of the nose. 



Nerve- supply. — ^The facial nerve. 

 Action. — ^To depress the ala of the nose. 



Attrahcns Auriculam 



Attollens Auriculam 



Retrahens Auriculam 



Occipitalis 



Great Occioital Ne^ve^ 

 Complexus"- 

 Small Occipital Nerve. 



Le\-ator Anguli Scapute. 



Great Auricular Nerve 

 Spinal Accessory Nerve 

 Branches from Third and Fourtn 

 Cervical Nerves to Trapezius " J^ 

 Scalenus Medius 



Supra-acromial Nerve 



Trapezius 



Splenius CapitL 



Frontalis 



Orbicularis Palpebrarum 



Levator Labii 

 Superioris Abeque Nasi 

 ,Le\-ator Labii Superioris 

 Zygomaticus Minor 

 *iC.Zygomatictis Major 

 -—.Masseter 



I . Orbicularis Oris 



.Depressor Labii Inferioris 



—•Depressor Anguli Oris 

 -.Levator Menti 



^Anterior Belly of Digastric 



'^ '■ .. Anterior Belly of 0_mo-hyoid 

 ~7_ J* _. Stemo-cleido-mastoid 



Superficial Cervical Nerve 



r\>itsit3'4^ .Suprasternal Nerve 

 _:i Ml Supraclavicular Nerve 



Scalenus Anticus 



Posterior Belly of Omo-hjroid Subclavian Artery (third part) 



Fig. 475. — ^The Right Side of the Head and Neck. 

 (The Platysma Myoides has been removed, and the Nerves are shown). 



Dilator Maris Anterior — Origin. — ^The cartilage of the aperture 

 of the nose. 



Insertion. — The deep surface of the skin over the ala of the nose. 



Nerve-supply. — ^The facial nerve. 



Action. — To dilate the nostril. 



Dilator Maris Posterior — Origin. — (i) The margin of the nasal 

 notch of the superior maxilla ; and (2) the accessory or sesamoid 

 cartilages of the nose. 



