THE DEEP CERVICAL FASCIA. 



297 



stronger layer, lying under the former, and closely covering the sterno-hyoid and 

 sterno-thyroid muscles, is attached to the interclavicular ligament and the deep 

 surface of that bone. Between these layers, at the upper border of the sternum, 

 is a small interval (suprasternal space), which extends also a short distance on 

 each side above the clavicle and behind the sternal head of the sterno-mastoid 

 (supraclavicular recess). This space contains some loose connective tissue and fat, 

 the communicating branch between the two anterior jugular veins, and sometimes 



THYPOID CART. 



MOID CART. 



PLATYSMA 



THYROID VESS. 



OESC. HYPOGL. 



. CAR. ART. 



INT. JUG. VN. 



VERT. VESS. 



DEEP CERV. ART. 



Fig. 276. TRANSVERSE SECTION OP THE NECK THROUGH THE FIFTH CERVICAL VERTEBRA, REPRE- 

 SENTING SEMIDIAGRAMMATICALLY THE ARRANGEMENT OF THE CERVICAL FASCIA. (After Btaune and 



' from nature.) (G. D. T.) 



The section passes through the upper pai*t of the larynx, a little above the rima glottidis. The 

 fascial planes are indicated by white lines, but it is to be observed that these are in many places not 

 definite membranes, but merely layers of more or less dense connective tissue. 



a small lymphatic gland ; and in the lateral recess the anterior jugular vein is 

 directed outwards. 



Prolonged from the deeper of these two layers, a fascia is found in the posterior 

 triangle, investing the posterior belly of the omo-hyoid muscle, and binding it 

 down to the clavicle and first rib, where this structure is connected with the costo- 

 coracoid membrane. Still deeper in the anterior triangle a process of the fascia 

 passes behind the depressor muscles of the hyoid bone, investing the thyroid body, 



