HEAD AND ANTERIOR CERVICAL STRUCTURES. n 



Lymphatics of the head and neck : 

 Superficial. Deep. 



Superficial lymphatic vessels of the scalp, 689 ; Fig. 398. (674) 

 Superficial lymphatic glands of the head and neck, 689 ; Fig. 398. (674) 

 Transverse : 



Occipital or suboccipital glands. 

 Posterior auricular or sterno-mastoid glands. 

 Muscles of the head, Fig. 309 ; P. 453. (448) 

 Occipito-frontalis, 454-5. (449-50) 



Occipitalis and frontalis and epicranial aponeurosis. 

 Occipitalis : Origin. Insertion. 

 Frontalis : Origin. Insertion. 

 Epicranial aponeurosis. 



Structure. Nerve supply, Occipitalis, frontalis. 

 Action. Relations. Variations. 



Make a median incision three or four inches in length through the aponeurosis of the occipito-frontalis, 

 also a short lateral incision. Raise a small portion of the aponeurosis and expose the subaponeurotic 

 layer. 



Subaponeurotic layer, 1115. (1092-3) 



Pericranium and subpericranial connective tissue. 1115. (1092) 



Extrinsic Muscles of the Auricle, 458-9; Fig. 309. (452-3) 



To demonstrate these muscles, draw the auricle in a direction from the point of origin, when the fibers 



will be rendered prominent and can be exposed. 



Attollens aurem : 



Origin. Insertion. Structure. Xerve-supply. Action. Relations. 

 Attrahens aurem : 



Origin. Insertion. Structure. Nerve-supply. Action. Relations. 

 Retrahens aurem : 



Origin. Insertion. Structure. Nerve-supply. Action. Relations. 

 With a chisel chip off a small portion of the outer table of the skull cap and examine the diploe. 



Structure of the Cranium, 1116-17. ( I0 93-4) 

 Two layers and intervening cancellous tissue. 

 Outer. Inner. 

 Diploe. 



Veins of the diploe, 655-6 ; Fig. 386. (642-3) 

 Frontal. Fronto-sphenoidal 

 Fronto-parietal or anterior temporal. 

 External parietal or posterior temporal. 



Occipital or parieto-occipital. 



Results of the above varying elasticity, 1016-17. (1093-4) 



Anatomical conditions tending to minimize the effects of violence inflicted upon the 

 skull, 1117. (1094) 



(1) Density and mobility of the scalp. 



(2) Dome-like shape of the skull. 



(3) Number of bones. 



(4) Sutures. 



(5) Internal membrane. 



(6) Elasticity of outer table. 



(7) Overlapping of some bones. 



(8) Presence of ribs or groins. 



(9) Buttresses. 



(10) Mobility of the head upon the spine. 

 Remove the skull-cap in the manner indicated, Dissection, 710. (694) 



The Cranial Cavity. 

 The menmges, 710. (694) 



Dura mater, arachnoid, and pia mater. 

 Dura mater, 711. (695) 



Outer or periosteal lamina. 



