DOI Seite / Zitierlink:
https://doi.org/10.11588/diglit.20658#0045
ANATOMY.
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to the parietal bones by the lambdoidal suture, and to the temporal bones by the additamentum
of the temporal suture.
The temporal bones are two in number: they are placed one on each side : each bone is dis-
tinguished by two parts ; one of which is called the squamous or scaly part, the other petrous,
from its hardness. This last part is shaped like a pyramid. There are externally three processes ;
one anterior, called the zygomatic process; one posterior, called the mastoid or mamillary pro-
cess ; and another inferior, called the styloid process.
These bones are joined to the ossa malarum by the zygomatic suture; to the parietal bones
by squamous suture ; to the os occipitis by the lambdoidal suture : and to the sphenoid bone by
the sphenoid suture.
The sphenoid bone, sometimes called the cuneiforme, is of a very irregular figure, and has been
compared to a bat with extended wings. It is joined to all the bones of the cranium ; and forms
part of the basis of the skull. It assists in forming the orbits ; and also affords attachment to
several muscles.
The os ethmoides is situated at the front of the basis of the cranium, and is of a very irregular
figure. It consists of a middle part and two sides, the former being pierced with a great number
of holes: on the exterior part of this bone there is a process which divides the cavity of the nos-
trils. This bone is united to the os sphenoides, os frontis, ossa maxillaria, ossa palati, ossa nasi,
ossa unguis, and vomer.
Proper Bones of the Face.~] The face, so called, is divided into the upper and lower jaws. The
upper jaw consists of thirteen bones, exclusive of the teeth ; six being placed on each side of the
maxilla superior, and one in the middle. Of those which are in pairs are the ossa malarum,
ossa maxilliari, ossa nasi, ossa unguis, ossa palati, and ossa spongiosa inferiora: the single bone
is the vomer.
The ossa malarum are prominent square bones, placed under the eyes, of which they form
part of the orbits, and the upper part of the cheeks.
The ossa maxillaria receive their name from their forming the most considerable part of the
upper jaw : they are of a very irregular figure ; have many processes, the principal of which are,
I. The nasal process, situated at the upper and fore part of the bone ; and forming part of the
side of the nose. 2. The alveolar process, of a circular form, at the interior part of the bone, in
which are placed the sockets for the teeth. And, 3. the third process, is united to the os mala?
on each side. These bones are connected with the greater part of the bones of the face and
cranium, and assist in forming the cheeks, palate of the mouth, nose, and orbits of the eyes.
The ossa nasi are in the form of two irregular squares. They are thicker and narrower above
than below, and externally somewhat convex. They constitute the upper part of the nose.
They are united to each other at their fore part: at their upper part to the os frontis ; by their
sides to the ossa maxillaria superiora ; at the hinder part, and internally, to the septum narium;
and at the bottom part to some of the nasal cartilages.
The ossa unguis are small trasparent bones, and receive their name from their supposed re-
semblance to a finger nail. They are of an irregular figure, and have a ridge running down the
middle of their external surface. That part next the nose is concave, and serves to support the lachry-
mal sac, and part of the duct. The other portion of this bone, which is flat, forms a small part of
the orbit. These bones are connected with the os frontis, os ethmoides, and os maxillare superius.
The
SI
to the parietal bones by the lambdoidal suture, and to the temporal bones by the additamentum
of the temporal suture.
The temporal bones are two in number: they are placed one on each side : each bone is dis-
tinguished by two parts ; one of which is called the squamous or scaly part, the other petrous,
from its hardness. This last part is shaped like a pyramid. There are externally three processes ;
one anterior, called the zygomatic process; one posterior, called the mastoid or mamillary pro-
cess ; and another inferior, called the styloid process.
These bones are joined to the ossa malarum by the zygomatic suture; to the parietal bones
by squamous suture ; to the os occipitis by the lambdoidal suture : and to the sphenoid bone by
the sphenoid suture.
The sphenoid bone, sometimes called the cuneiforme, is of a very irregular figure, and has been
compared to a bat with extended wings. It is joined to all the bones of the cranium ; and forms
part of the basis of the skull. It assists in forming the orbits ; and also affords attachment to
several muscles.
The os ethmoides is situated at the front of the basis of the cranium, and is of a very irregular
figure. It consists of a middle part and two sides, the former being pierced with a great number
of holes: on the exterior part of this bone there is a process which divides the cavity of the nos-
trils. This bone is united to the os sphenoides, os frontis, ossa maxillaria, ossa palati, ossa nasi,
ossa unguis, and vomer.
Proper Bones of the Face.~] The face, so called, is divided into the upper and lower jaws. The
upper jaw consists of thirteen bones, exclusive of the teeth ; six being placed on each side of the
maxilla superior, and one in the middle. Of those which are in pairs are the ossa malarum,
ossa maxilliari, ossa nasi, ossa unguis, ossa palati, and ossa spongiosa inferiora: the single bone
is the vomer.
The ossa malarum are prominent square bones, placed under the eyes, of which they form
part of the orbits, and the upper part of the cheeks.
The ossa maxillaria receive their name from their forming the most considerable part of the
upper jaw : they are of a very irregular figure ; have many processes, the principal of which are,
I. The nasal process, situated at the upper and fore part of the bone ; and forming part of the
side of the nose. 2. The alveolar process, of a circular form, at the interior part of the bone, in
which are placed the sockets for the teeth. And, 3. the third process, is united to the os mala?
on each side. These bones are connected with the greater part of the bones of the face and
cranium, and assist in forming the cheeks, palate of the mouth, nose, and orbits of the eyes.
The ossa nasi are in the form of two irregular squares. They are thicker and narrower above
than below, and externally somewhat convex. They constitute the upper part of the nose.
They are united to each other at their fore part: at their upper part to the os frontis ; by their
sides to the ossa maxillaria superiora ; at the hinder part, and internally, to the septum narium;
and at the bottom part to some of the nasal cartilages.
The ossa unguis are small trasparent bones, and receive their name from their supposed re-
semblance to a finger nail. They are of an irregular figure, and have a ridge running down the
middle of their external surface. That part next the nose is concave, and serves to support the lachry-
mal sac, and part of the duct. The other portion of this bone, which is flat, forms a small part of
the orbit. These bones are connected with the os frontis, os ethmoides, and os maxillare superius.
The