40 HUMAN ANATOMY. 



Mastoid foramen transmits small vein to the lateral sinus 

 and small artery from occipital to the dura mater; 



Anterior condyloid foramen transmits meningeal branch 

 from ascending pharyngeal artery and hypoglossal nerve; 



Posterior condyloid foramen transmits posterior condyloid 

 vein; 



Foramen magnum transmits vertebral arteries, medulla ob- 

 longata and its membranes, and the spinal accessory nerves. 



OTHER FORAMINA OF SKULL. 



The external surface of the base presents seven pairs : 



PALATAL PORTION: 



Incisive foramina transmit nerves and vessels to the incisor 

 teeth; 



Foramina of Stenson transmit the anterior branch of the 

 posterior palatine vessels; 



Foramina of Scarpa transmit the right and left naso-pala- 

 tine nerve; 



Posterior palatine foramina transmit posterior palatine ves- 

 sels and descending palatine nerve ; 



Accessory palatine foramina transmit posterior palatine 

 nerves ; 



Ptery go-palatine canals transmit pterygo-palatine vessels, 

 and the 



Pterygoid or Vidian canal transmits the Vidian artery and 

 nerve. 



LATERAL PORTION presents nine pairs : 

 Opening of the Eustachian tube; 



Opening of the tensor tympani canal transmits the tensor 

 tympani muscle; 



Glaserian fissure transmits the tympanic branch of the in- 

 ternal maxillary artery and lodges the processus gracilis of the 

 malleus ; 



Canal of Huguier transmits chorda tympani nerve ; 



Foramen for Jacobsons nerve, the tympanic branch of the 

 glosso-pharyngeal nerve ; 



Foramen for Arnold's nerve, the auricular branch of the 

 pneumogastric nerve ; 



Opening of aquceductus cochlea transmits a vein from the 

 cochlea to internal jugular vein ; 



Auricular fissure transmits exit of Arnold's nerve ; 



Stylo-mastoid foramen transmits the facial nerve and stylo- 

 mastoid artery. 



