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44 ANATOMY
nucleated red blood-cells ; osteoblasts ; colored cells similar to the red
blood-corpuscles.
The Medullary or True Marrow-cells are round and nucleated. They
have amoeboid movements, and in general appearance may be coni-
FiG. 10.
,r\ „ -Ik
Cells from the ^Marrow of Fone during their Period of Pevelopment : a, h, miiltinuelear "giant-cells;"
''i/i fli lymph-cells from the marrow of the tibia of the guinea-pig, examined in the serum of the
blood ; c, (I, //, after the action of alcohol and water :W per cent. ; i, ./, so caded osteoblasts from
the femur of a new-born dog, after the action of alcohol 33 per cent, (high power).
pared to lymph-cells or the white corpuscles of the blood, though some-
what larger and possessing a clearer protoplasm. This class is more
abundant in red than yellow marrow.
The Fat-vc>:>ielcs are similar to those found in adipose tissue. As
previously stated, the color of yellow marrow is due to these vesicles,
of which it is in greater part made up. Fat-vesicles are found in very
small numbers in the red marrow.
The Midtinuclear Giant-cells are large, soft, protoplasmic masses,
granular in appearance. They generally contain a large number
of nuclei ; these are sometimes
Fig. 11.
grouped on one side, and have
a fine fibrillated network run-
ning through them. Some-
times they contain only one
nucleus, which is large and
shows indications of segmenta-
tion. These cells have been
called by Kobin myelo})laxes,
and by Kolliker osteoclasts.
The latter authoritv considers
Three Multinuclear Giant-cells fOsteoclastsV from ah- +1,„™ IlCCefehdiy lU UUllt-aUbUip-
mciU
tior.occ-ii-ir f<^ iVnnn nli^ni-i-,
sorptioii-surfaces of growing bone H(m) diameters—
Kolliker).
^J^^j^^
The Nucleated Red Blood-cells resemble the red corjiuscles of the
blood, but are somewhat larger; they have a smooth, homogeneous
cell-body with a distinct nucleus. These cells are supposed by some to
lose their nuclei, become biconcave, and assume the character -of the
nucleated red blood-cells ; osteoblasts ; colored cells similar to the red
blood-corpuscles.
The Medullary or True Marrow-cells are round and nucleated. They
have amoeboid movements, and in general appearance may be coni-
FiG. 10.
,r\ „ -Ik
Cells from the ^Marrow of Fone during their Period of Pevelopment : a, h, miiltinuelear "giant-cells;"
''i/i fli lymph-cells from the marrow of the tibia of the guinea-pig, examined in the serum of the
blood ; c, (I, //, after the action of alcohol and water :W per cent. ; i, ./, so caded osteoblasts from
the femur of a new-born dog, after the action of alcohol 33 per cent, (high power).
pared to lymph-cells or the white corpuscles of the blood, though some-
what larger and possessing a clearer protoplasm. This class is more
abundant in red than yellow marrow.
The Fat-vc>:>ielcs are similar to those found in adipose tissue. As
previously stated, the color of yellow marrow is due to these vesicles,
of which it is in greater part made up. Fat-vesicles are found in very
small numbers in the red marrow.
The Midtinuclear Giant-cells are large, soft, protoplasmic masses,
granular in appearance. They generally contain a large number
of nuclei ; these are sometimes
Fig. 11.
grouped on one side, and have
a fine fibrillated network run-
ning through them. Some-
times they contain only one
nucleus, which is large and
shows indications of segmenta-
tion. These cells have been
called by Kobin myelo})laxes,
and by Kolliker osteoclasts.
The latter authoritv considers
Three Multinuclear Giant-cells fOsteoclastsV from ah- +1,„™ IlCCefehdiy lU UUllt-aUbUip-
mciU
tior.occ-ii-ir f<^ iVnnn nli^ni-i-,
sorptioii-surfaces of growing bone H(m) diameters—
Kolliker).
^J^^j^^
The Nucleated Red Blood-cells resemble the red corjiuscles of the
blood, but are somewhat larger; they have a smooth, homogeneous
cell-body with a distinct nucleus. These cells are supposed by some to
lose their nuclei, become biconcave, and assume the character -of the
