HEAD. 101 



and glosso-facial veins. Blood vessels : small arteri- 

 oles. I^erves : facial, inferior maxillary and carotid 

 plexuses. 



Duct of S tenon lays on tendon of the sterno-max- 

 illaris, enters the intermaxillary space, alongside the 

 internal masseter, above the glosso-facial vein ; reaches 

 the maxillary lissure ; runs up in front of the anterior 

 border of the external masseter, obliquely forward 

 under the glosso-facial vein and artery ; passes through 

 the cheek to open opposite the third upper molar. 



2. Maxillary or sub-maxillary. — Division : Two 

 faces, two borders and two extremities. External face 

 corresponds to the internal pterygoideus, the digastri- 

 cns, the sterno-m axillaris and the cellulo aponeurosis, 

 which separates it from the parotid. Internal face 

 applied to the side of the larynx, the guttural pouch, 

 the carotid artery and nerves accompanying it. Supe- 

 rior border margined by the digastricus. Inferior bor- 

 der is in contact with the glosso-facial vein. Posterior 

 extremity rests on the wing of the atlas. Anterior ex- 

 tremity is between the pterygoideus internus and the 

 hyo-thyroideus muscles. Vessels : innominate branches. 

 Is erves : from the carotid plexus. 



Duct of Wharton runs from between the mylo-hyoid- 

 eus and great hyo-glossus, crossing outwards the glosso- 

 facial artery and great hypo-glossal nerve, inwardly, 



