Part 289

Zone, epigastric, of horse, 353 hypogastric, of horse, 353 intermediate, of kidney, 473 mesogastric, of horse, 353

Zonula ciliaris, 743, 747 of Zinn, 747

Zygomatic arch of horse, 56, 67 bones of horse, 62 crest of horse, 58, 62 gland of dog, 427 nerve of dog, 728 of horse, 679 process of frontal bone, 55 of maxillary bone, 58

Zygomatic process of temporal bone, 56

Zygomatico-auricularis, 749 of ox, 747

Zygomaticus muscle of dog, 318 of horse, 215 of ox, 295 of pig, 311

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Footnote 1:

Only the gross structure is discussed here. For the microscopic structure reference is to be made to histological works.

Footnote 2:

Only a brief general statement of osteogenesis can be made here; details must be sought in embryological literature.

Footnote 3:

As might be expected from the history of anatomy, a good many of these terms are more or less interchangeable; furthermore, a given skeletal feature may differ greatly in various species.

Footnote 4:

The term is employed here, as is usual in descriptive anatomy, to designate only the bony part of the rib (Os costale); morphologically it includes the cartilaginous part also.

Footnote 5:

The manubrium sterni of man is equivalent, strictly speaking, to the cariniform cartilage + the first osseous segment of the horse.

Footnote 6:

The long axis of the skull is considered to be horizontal in these descriptions.

Footnote 7:

The occipital crest of this description is equivalent to the external occipital protuberance and superior nuchal line of man. A curved line a little lower down, which is continued on the paramastoid process, represents the inferior nuchal line of man.

Footnote 8:

Other terms for these parts are basioccipital (basilar part), exoccipitals (lateral parts), and supraoccipital (squamous part). It should be noted, however, that the lines between the basioccipital and exoccipitals pass through the lower part of the condyles.

Footnote 9:

This foramen might well be called a canal, since it is an inch or more in length.

Footnote 10:

The cavity so formed may be termed the sphenopalatine sinus. The sphenoidal sinus may be a separate cavity which communicates only with the ventral ethmoidal meatuses; this arrangement exists in about a third of the cases, according to Paulli.

Footnote 11: