DOI Page / Citation link:
https://doi.org/10.11588/diglit.6271#0041
( a )
vitMn theboite, above the root of the nose ; they are always se-
parated by a thin bony partition, and open by two small holes
into the nostrils,, of which they form a part:—two orbitar cavi-
ties,in which are two depressions for the situation of the lachry-
mal gland ;—a notch in each superciliary ridge for the trochlea
of the superior oblique muscle ;—a super ciliary foramen,
through which passes a small artery from within the cranium,
together with a branch of the fifth pair of nerves, to be distri-
buted to the muscles and integuments of the forehead ; often
a notch only is seen, and sometimes there are two foramina
on one side, and one on the other;—the anterior orbitar fore-
men, which affords a passage to a branch of the ophthalmic
artery, and a sftiall twig of the fifth pair of nerves into the
nose ; this foramen is sometimes formed by the junction of
the ethmoid bone with the frontal;—the posterior orbitar fo-
ramen, which is smaller than the former, and deeper in the or-
bit ;—a depression, behind the middle of the superciliary
ridge, for the situation of the lachrymal gland ;—the foramen
ctecum, situated below the beginning of the internal front;
spine ;—slight furrows and ridges on the orbitar pi ocesses, oc-
casioned by the convolutions of the brain.
Connexion. The frontal bone is connected with the two
parietal, by means ef the coronal suture 3 with the two ossa
nasi, the two superior maxillary bones, and the two lachrymal
bones, by means of what is called the transverse suture ; w ith
the sphajnoid bone by means of harmony, called harmonin
sphicnoidalis; with the ethmoid bone by harmonia etiunoidalis :
and with the os jugale by means of suture.
The use of the frontal bone is to constitute the forehead
pituitary sinuses, part of the orbit, and to contain and defend
the anterior lobes of the brain.
vitMn theboite, above the root of the nose ; they are always se-
parated by a thin bony partition, and open by two small holes
into the nostrils,, of which they form a part:—two orbitar cavi-
ties,in which are two depressions for the situation of the lachry-
mal gland ;—a notch in each superciliary ridge for the trochlea
of the superior oblique muscle ;—a super ciliary foramen,
through which passes a small artery from within the cranium,
together with a branch of the fifth pair of nerves, to be distri-
buted to the muscles and integuments of the forehead ; often
a notch only is seen, and sometimes there are two foramina
on one side, and one on the other;—the anterior orbitar fore-
men, which affords a passage to a branch of the ophthalmic
artery, and a sftiall twig of the fifth pair of nerves into the
nose ; this foramen is sometimes formed by the junction of
the ethmoid bone with the frontal;—the posterior orbitar fo-
ramen, which is smaller than the former, and deeper in the or-
bit ;—a depression, behind the middle of the superciliary
ridge, for the situation of the lachrymal gland ;—the foramen
ctecum, situated below the beginning of the internal front;
spine ;—slight furrows and ridges on the orbitar pi ocesses, oc-
casioned by the convolutions of the brain.
Connexion. The frontal bone is connected with the two
parietal, by means ef the coronal suture 3 with the two ossa
nasi, the two superior maxillary bones, and the two lachrymal
bones, by means of what is called the transverse suture ; w ith
the sphajnoid bone by means of harmony, called harmonin
sphicnoidalis; with the ethmoid bone by harmonia etiunoidalis :
and with the os jugale by means of suture.
The use of the frontal bone is to constitute the forehead
pituitary sinuses, part of the orbit, and to contain and defend
the anterior lobes of the brain.