MUSCLES OF ANTERIOR NECK. 481 



CHAPTER II. 



ACTIVE ORGANS OF THE TRUNK. 



FIRST DIVISION. 

 ORGANS BELONGING TO THE NECK AND BACK. 



1. Organs of motion the muscles. 



2. Organ of deglutition oesophagus. 



3. Organs of circulation blood-vesssls. 



4. Organs of innervation nerves. 



5. Thyroid gland. 



6. Lymphatic glands. 

 *T. Fascia of the neck. 

 8. Organ of voice. 



SECTION I. 



ORGANS OF MOTION MUSCLES OF ANTERIOR NECK. 



Dissection. Make an incision through the integuments 

 along the clavicle, from the sternum to the acrornion pro- 

 cess; a second incis- F IG . 146. 

 ion from the chin, 

 along the margin 

 of the lower jaw, 

 to the mastoid pro- 

 cess ; connect these 

 two l>y a third, run- 

 ning along the me- 

 dian line of the 

 neck, frorn the chin 

 to the sternum. 

 The integument, 

 thus marked off, 

 should be dissected from he chin, obliquely downward and 

 outward towards the clavicle, embracing the whole side of 



FIG. 146 represents the superficial Muscles of the Neck, a Platysma my- 

 oides, or latissimus colli. & Sterao-cleido mastoideus. c Sternal attachment. 

 d Clavicular attachment, e Sterno-hyoideus. 

 31 



