Histology Laboratories Molecules to Systems 2003 Compiled by James D. Jamieson, MD/PhD Thomas L. Lentz, MD No part of this image collection may be distributed outside of the Yale University Intranet. Acknowledgements Sources of Micrographs, Diagrams and Figures Alberts, B. et al. Molecular Biology of the Cell. 4th Edition, Garland Science, New York, 2002. Gartner, L. P. and Hiatt, J. L. Color Atlas of Histology, Williams & Wilkins, Baltimore, 1994. Kerr, J. B. Atlas of Functional Histology. Mosby, London, 1999. Kessel, R. G. and Kardon, R. H. Tissues and Organs: a text-atlas of scanning electron microscopy. W. H. Freeman, San Francisco, 1979. Lentz, T. L. Cell Fine Structure. W. B. Saunders, Philadelphia, 1971. Lodish, H. et al. Molecular Cell Biology. W. H. Freeman, New York, 2000. Mizoguti, H. Color Slide Atlas of Histology. Nihon Shashin Shinbunsha, Tokyo. Young, B. and Heath, J. W. Wheater’s Functional Histology. Churchill Livingstone, Edinburgh, 2000. Micrographs taken by George Palade, Marilyn Farquhar, James D. Jamieson, Nicolai Simionescu, Maya Simionescu, David Castle, Thomas L. Lentz. Web Resources http://info.med.yale.edu/webpath/webpath.htm Cushing Library Educational Software/Cell Biology/Several Histology Resources Bone Laboratory Adult Bone Some Useful Terms Compact bone = cortical bone Trabecular bone = spongy = cancellous bone Osteoid: Bone matrix not yet calcified. Woven bone: immature bone with randomly arranged collagen fibers. Produced when osteoblasts rapidly produce osteoid as in fetal bone development; fracture repair (callus). Lamellar bone: regular parallel bands of collagen. Woven bone eventually remodeled into lamellar bone. The normal form of bone in adults. Trabecular bone Compact bone Volkmann’s canals Lamellar bone Haversian canals Cortical Bone Canaliculi Haversian canal Osteocytes Osteon: Lamellar Bone Osteocytes in Lacunae in Lamellar Bone Trabecular Bone Muscle Trabecular Bone: XS Long Bone Endosteum Periosteum Trabeculae Marrow Trabecular Bone Fibrous layer Osteoclasts Cellular layer Compact bone Periosteum Endosteum Bone Marrow Articular Surface of Long Bone Collagen layer Cartilage Bone Articular Surface of Long Bone Bone Formation Intramembranous Ossification (No cartilage model; bones of skull) Osteoblasts Osteoclasts Intramembranous Ossification: Fetal Skull Osteoblasts Osteoclasts Intramembranous Ossification: Fetal Skull Endochondral Ossification (Ribs, long bones, vertebrae; cartilage model) Endochondral Bone Formation Epiphysis (E) Diaphysis Epiphyseal growth plates (GP) Fetal Finger Epiphysis Epiphysis With Trabecular Bone E GP Metaphysis Articular cartilage E GP M D Growing Tibia Calcified cartilage GP Bone Osteoid Growing Tibia Resting Proliferation Maturation Hypertrophy Zone of calcifying cartilage Chondrocyte Growth Sequence Calcified cartilage Bone Osteoblasts; osteoid Development of Trabecular Bone Bone Remodeling Activation Resorption Formation Sequence Howship’s lacuna Osteoclasts Osteocytes in new lamellar bone Osteoblasts (OB) Vessels in Resorption Canal Osteoid OB Osteoid Resorption Canal XS Some pathology to think about. Mammary Carcinoma Metastases to Vertebra Callus at Fracture Site New Bone at Fracture Site Osteoporosis with Vertebral Collapse Osteogenic Sarcoma/Osteoid