166 



TEXT-BOOK OF EMBRYOLOGY. 



Bones 



Of Intracartilaginous 

 Origin 



Of Intramembranous 

 Origin 



Derived from Visceral 

 Arches 



Occipitale. 



Pars basilaris. 

 Pars lateralis. 

 Squama occipitalis below 

 sup. nuchal line. 



Squama occipitalis above 

 sup. nuchal line. 



Temporale. 



Pars mastoidea. 

 Pars petrosa, with 

 essus sty oideus. 



proc- 



Pars tympanica. 

 Squama tempo ralis. 



Processus styloideus (sea 

 arch). 



Sphenoidale. 



Corpus. 



Ala parva. 



Ala magna. 



Hamulus pterygoideus. 



Processus pterygoideus, ex- 

 cept hamulus pterygoi- 

 deus. 



Ethmoidale. 



Crista galli. 

 Lamina cribrosa. 

 Lamina perpendicularis. 

 Labyrinthus ethmoidalis. 



Vomer. 



Vomer. 



Parietale. 



Parietale. 



Frontale. 



Frontale. 



Lacrimale. 



Lacrimale. 



Nasale. 



Nasale. 



Zygoma. 



Zygoma. 



Maxilla. 



Maxilla, with incisivum. 



Maxilla,except incisivum( ?) 

 (first arch). 



Palatinum. 



Palatinum. 



Palatinum. 



Mandibula. 



Processus condyloideus, 



tip of. 

 Processus coronoideus, 



tip of. 

 Corpus, distal end of. 



Processus condyloideus, ex- 

 cept tip. 



Processus coronoideus, ex- 

 cept tip. 



Corpus, except distal end. 



Ramus. 



Mandibula (first arch). 



Hyoideum. 



Hvoideum 



Cornu majus (third arch). 

 Cornu minus (second arch). 

 Corpus (third arch). 



Ossicula 

 auditus. 



Incus. 



Malleus. 



Stapes, except basis (?). 



Basis stapedis. 



Incus (first arch). 

 Malleus (first arch). 

 Stapes, except basis 

 (second arch). 



The Appendicular Skeleton. 



The growth of the limb buds and their differentiation into arm, forearm 

 and hand, thigh, leg and foot, along with the rotation which they undergo during 

 development, have been discussed in the chapter on the external form of the 

 body (p. 121). The metameric origin of the muscles of the extremities is 



