DOI Seite / Zitierlink:
https://doi.org/10.11588/diglit.6271#0030
( 4 )
To exhibit the above circumstances, and demonstrate the
direction of the bony fibres, select—
1st, The parietal bones of a foetus ; macerate the soft parts
away, and preserve the bones in spirits. Thus they
will exhibit, very beautifully, the radiated direction of
the fibres.
2d, A portion of the adult femur from the body of the
bone ; macerate it, after depriving it of its soft parts, in
diluted muriatic acid, and then separate with forceps
the lamina;: this will exhibit the lamina? of bones.
3d, The os femoris of a foetus, slink calf, or a pig ; mace-
rate it, and keep it iu spirit, or dry it and put it into
spirit of turpentine, to shew the parallel direction of
the bony fibres.
Colour. This differs according to the proportions of earth
or blood entering their composition : hence, in the adult they
are whitest, and reddest in the child, more earth existing in
the former, and more blood in the latter.
Composition. Besides phosphate and carbonate of lime,
and gluten, which form the principal part of bone, it is sup-
plied with blood-vessels, absorbents, and nerves.
Figuue. Various, yet they are mostly divided, from their
shape, into broad and flat, long and round, and cylindrical
bones. Long and irregular-shaped bones are divided into a
body and extremities ; and flat bones into body and margins.
Names. Bones are variously named ; some from their situa-
tion, as the frontal, parietal, occipital, nasal, malar, &c.; others
from their figure, as the ethmoid bone, clavicle, os cuboides,
naviculare, tibia, &c.; and some from their use, as the sphas-
noid bone, the maxillary bone, the femur, & c. The processes
and cavities of bones are named after their figure, as the ace-
tabulum of the os innominatum, the odontoid process of the
second cervical vertebra, the coracoid process of the scapula,
&c.; or from their use, as the trochanters of the thigh-bone ;
or from their situation, as the nasal, palatine, orbitar pro-
cesses.
To exhibit the above circumstances, and demonstrate the
direction of the bony fibres, select—
1st, The parietal bones of a foetus ; macerate the soft parts
away, and preserve the bones in spirits. Thus they
will exhibit, very beautifully, the radiated direction of
the fibres.
2d, A portion of the adult femur from the body of the
bone ; macerate it, after depriving it of its soft parts, in
diluted muriatic acid, and then separate with forceps
the lamina;: this will exhibit the lamina? of bones.
3d, The os femoris of a foetus, slink calf, or a pig ; mace-
rate it, and keep it iu spirit, or dry it and put it into
spirit of turpentine, to shew the parallel direction of
the bony fibres.
Colour. This differs according to the proportions of earth
or blood entering their composition : hence, in the adult they
are whitest, and reddest in the child, more earth existing in
the former, and more blood in the latter.
Composition. Besides phosphate and carbonate of lime,
and gluten, which form the principal part of bone, it is sup-
plied with blood-vessels, absorbents, and nerves.
Figuue. Various, yet they are mostly divided, from their
shape, into broad and flat, long and round, and cylindrical
bones. Long and irregular-shaped bones are divided into a
body and extremities ; and flat bones into body and margins.
Names. Bones are variously named ; some from their situa-
tion, as the frontal, parietal, occipital, nasal, malar, &c.; others
from their figure, as the ethmoid bone, clavicle, os cuboides,
naviculare, tibia, &c.; and some from their use, as the sphas-
noid bone, the maxillary bone, the femur, & c. The processes
and cavities of bones are named after their figure, as the ace-
tabulum of the os innominatum, the odontoid process of the
second cervical vertebra, the coracoid process of the scapula,
&c.; or from their use, as the trochanters of the thigh-bone ;
or from their situation, as the nasal, palatine, orbitar pro-
cesses.