DOI Seite / Zitierlink:
https://doi.org/10.11588/diglit.6271#0048
( M )
The sphasnoid bone, at birth, consists of five portions,
joined together by strong cartilages ; one in the middle'
surrounding the pituitary gland, the two alcn majores,
and the two pterygoid processes. There is no sphe-
noidal sinus formed. The clinoid processes and alee
mvnores are cartilaginous.
OSS A TEMPORALIS.
Ossa temporum.
The temporal bones are of an irregular figure, and are
situated at the sides and inferior part of the cranium, contain-
ing within them the organ of hearing. Each bone is divided
into a squamous portion, which is flat, and forms the squamous
suture, and a part of the side of the cranium ; and a petrous
portion, sometimes termed the os petrosum, which is very irre-
gular, and is situated in the basis of the skull; it is a hard,
craggy protuberaaco, nearly of a triangular shape, and sur-
rounds the organ of hearing; and below this petrous portion
is a concave angular projecting portion, which forms a part of
the lambdoidal suture.
Processes. The zygomatic process, which, with a process
of the os jugale, forms the zygoma, yoke, or arch nf the tem-
ples, underneath which the temporal muscle moves, and from
whose lower edge several muscles of the face arise, particu-
larly the masseter and zygomatic. The mastoid, or mammary
process, which projects from under the ear, and has inserted
into its anterior part, the sterno-cleido-mastoideus muscle ;
and into its posterior part the complexus, the obliquus, and
trachelo-mastoideus. The styloid process, which is long and
pointed, and gives origin to a ligament of the os hyoides, also
to the stylo-hyoideus, stylo-pbaryngeus, and styloglossus
muscles. The vaginal process, which surrounds the root of
the styloid. The auditory process, or outer bony circle of the
The sphasnoid bone, at birth, consists of five portions,
joined together by strong cartilages ; one in the middle'
surrounding the pituitary gland, the two alcn majores,
and the two pterygoid processes. There is no sphe-
noidal sinus formed. The clinoid processes and alee
mvnores are cartilaginous.
OSS A TEMPORALIS.
Ossa temporum.
The temporal bones are of an irregular figure, and are
situated at the sides and inferior part of the cranium, contain-
ing within them the organ of hearing. Each bone is divided
into a squamous portion, which is flat, and forms the squamous
suture, and a part of the side of the cranium ; and a petrous
portion, sometimes termed the os petrosum, which is very irre-
gular, and is situated in the basis of the skull; it is a hard,
craggy protuberaaco, nearly of a triangular shape, and sur-
rounds the organ of hearing; and below this petrous portion
is a concave angular projecting portion, which forms a part of
the lambdoidal suture.
Processes. The zygomatic process, which, with a process
of the os jugale, forms the zygoma, yoke, or arch nf the tem-
ples, underneath which the temporal muscle moves, and from
whose lower edge several muscles of the face arise, particu-
larly the masseter and zygomatic. The mastoid, or mammary
process, which projects from under the ear, and has inserted
into its anterior part, the sterno-cleido-mastoideus muscle ;
and into its posterior part the complexus, the obliquus, and
trachelo-mastoideus. The styloid process, which is long and
pointed, and gives origin to a ligament of the os hyoides, also
to the stylo-hyoideus, stylo-pbaryngeus, and styloglossus
muscles. The vaginal process, which surrounds the root of
the styloid. The auditory process, or outer bony circle of the