THE HEAD AND NECK 



Io6q 



The fasciculi are about 3J inches long, and the innermost fibres 

 inferiorly are regarded by some as being prolonged downwards 

 upon the nasal bone as the pyramidalis nasi muscle. 



Epicranial Aponeurosis. — This is the intermediate tendon of the 

 occipito-frontalis muscle. It forms an aponeurotic stratum be- 

 neath the superficial fascia, and is connected to the skin by fibrous 

 processes, which separate the superficial fascia into lobides. Its 

 deep surface is loosely connected by areolar tissue to the subjacent 



Stensen's Duct.- 

 Baccinator Muscle... 



Facial Artery .. 

 Submental Artery ._ 



Lingtial Artery - 

 Sup. Lar. Art. and Nerve- 

 Thyro-hyoid Muscle . 

 Superior Thyroid Artery 



Post. Belly of Omo-hyoid *^^i^'±'^ 



Subclavian Artery.- ^'' /'/-Li 



(third part) 



Transverse Facial Artery 



Superficial Tem- 

 porcl Artery 



Internal Maxillary 

 Artery 



Posterior Auricular 

 Artery 

 -_.^. Occipital Artery 



7^W7^mttif— Stylo-byoM Muscle 



" -^f rrji'l P°^*- ^*"y °'" Digastric 



._^\^'|. Hypoglossal Nerve 



^:V «; I Descendens Cervicis 



1 J Nerve 



External Carotid 

 Artery 



n— ~ Stemo-ckido-mastoid 

 ^*^ — TrapezitK 



___Transverse Cervi- 

 cal Artery 

 - . Suprascapular 

 Artery 



feii'iiii.Aui 



Fig. 43/. — The Left Side of the Head and Neck. 

 (The Platy'sma Myoides has been removed). 



periosteum. Posteriorly it gives insertion to the two bellies of the 

 occipitalis muscle, and, in the interval between these, it dips down 

 to be attached to the inner part of the highest curved line of the 

 occipital bone and the external occipital protuberance. Anteriorly 

 it gives insertion to the two halves of the frontalis muscle. Laterally, 

 below the superior temporal ridge, it is prolonged downwards over 

 the temporal fascia as a delicate expansion, which gives origin to 

 the attollens auriculam and attrahens auriculam muscles. 



Nerve- supply. — ^The occipitalis muscle is supplied by the pos- 



