. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Figure 11. Jaw muscles of the gray jay (Perisoreus canadensis). (A) Ventral view of the M. pterygoideus. (B) Oblique view into the orbit showing the dorsal jaw muscles and the dorsal aspect of the M. pterygoideus. In the ventral view of the jaw muscles of this and all other species, the posterior end of the palatine process of the premaxilla or a point on the palatine posterior to the palatine process is indicated by an arrow (PPM). Thus the reader can note the relationship between the palatine process and the M. pter
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Figure 11. Jaw muscles of the gray jay (Perisoreus canadensis). (A) Ventral view of the M. pterygoideus. (B) Oblique view into the orbit showing the dorsal jaw muscles and the dorsal aspect of the M. pterygoideus. In the ventral view of the jaw muscles of this and all other species, the posterior end of the palatine process of the premaxilla or a point on the palatine posterior to the palatine process is indicated by an arrow (PPM). Thus the reader can note the relationship between the palatine process and the M. pterygoideus ventralis lateralis. In the gray jay, for example, there is no connection between the palatine process and the M. p. ventralis lateralis. The following description of the M. pterygoideus (Fig. 11) is for the gray jay (Perisoreus canadensis), a bird having a medium-sized bill of fairly generalized shape. I shall regard the arrangement of the M. pterygoideus in this species as "typical" for the Passeres. a) M. pterygoideus ventralis lateralis. This large segment comprises almost all of the ventral portion of the M. ptery- goideus. It originates from the entire ventral surface of the transpalatine process and from much of the ventral surface of the medial shelf of the palatine, and inserts on the medial and ventral surfaces of the mandible and on the medial process of the. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Harvard University. Museum of Comparative Zoology. Cambridge, Mass. : The Museum
Size: 1864px × 1340px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorharvarduniversity, bookcentury1900, booksubjectzoology
