
Bone: intramembranous formation
Intramembranous bone formation in the fetus can produce compact, as well as spongy bone, as seen in this image from the diaphysis of a fetal, long bone. The lack of lamellae, the blue tint to the matrix and the rounded, numerous osteocytes are all indicative of woven bone. 200x

Compact, woven bone
Intramembranous bone formation in the fetus can produce compact, as well as spongy bone, as seen in this image from the diaphysis of a fetal, long bone. The lack of lamellae, the blue tint to the matrix and the rounded, numerous osteocytes are all indicative of woven bone. 200x

Osteocytes
Intramembranous bone formation in the fetus can produce compact, as well as spongy bone, as seen in this image from the diaphysis of a fetal, long bone. The lack of lamellae, the blue tint to the matrix and the rounded, numerous osteocytes are all indicative of woven bone. 200x

Extracellular matrix
Intramembranous bone formation in the fetus can produce compact, as well as spongy bone, as seen in this image from the diaphysis of a fetal, long bone. The lack of lamellae, the blue tint to the matrix and the rounded, numerous osteocytes are all indicative of woven bone. 200x

Periosteum
Intramembranous bone formation in the fetus can produce compact, as well as spongy bone, as seen in this image from the diaphysis of a fetal, long bone. The lack of lamellae, the blue tint to the matrix and the rounded, numerous osteocytes are all indicative of woven bone. 200x

Endosteum
Intramembranous bone formation in the fetus can produce compact, as well as spongy bone, as seen in this image from the diaphysis of a fetal, long bone. The lack of lamellae, the blue tint to the matrix and the rounded, numerous osteocytes are all indicative of woven bone. 200x

Marrow cavity
Intramembranous bone formation in the fetus can produce compact, as well as spongy bone, as seen in this image from the diaphysis of a fetal, long bone. The lack of lamellae, the blue tint to the matrix and the rounded, numerous osteocytes are all indicative of woven bone. 200x