588 
F. H. EDGEWORTH. 
outer limb of the mass, with the upward projection, is the 
Anlage of the temporal, external pterygoid and masseter 
muscles. The inner limb is the Anlage of the internal 
pterygoid, tensor veli palatini, and tensor tympani; there is 
Fig. 73. 
an inward bulge of its upper part — the future tensor veli 
palatini, nnd a backward projecting part — the future tensor 
tympani ; its lower end is separated from MeckeFs cartilage 
by the chorda tympani. 
The third division of the fifth nerve gives off the buccal 
nerve (which penetrates the upper part of the outer limb of 
the mass), then passes down behind the apex of the mass. 
