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Jun 16, 2022 · Compact bone is sometimes called cortical bone. The lacunae bone containing osteocytes are placed at the borders of adjacent lamellae, and the lacuna-canalicular system eventually connects with the central canal. Figure 5: Osteocyte histology representing osteon (top) and the position of lacuna in a compact bone (bottom).
The lacunae are situated between the lamellae, and consist of a number of oblong spaces. In an ordinary microscopic section, viewed by transmitted light, they appear as fusiform opaque spots. Each lacuna is occupied during life by a branched cell, termed an osteocyte, bone-cell or bone-corpuscle. Lacunae are connected to one another by small ...
Gross Anatomy of Bones. A long bone has two main regions: the diaphysis and the epiphysis ( Figure 6.3.1). The diaphysis is the hollow, tubular shaft that runs between the proximal and distal ends of the bone. Inside the diaphysis is the medullary cavity, which is filled with yellow bone marrow in an adult.
- Lindsay M. Biga, Sierra Dawson, Amy Harwell, Robin Hopkins, Joel Kaufmann, Mike LeMaster, Philip Mat...
- 2019
lacuna. [ lah-ku´nah] ( L.) 1. a small pit or hollow cavity. 2. a defect or gap, as in the field of vision (scotoma). adj., adj lacu´nar. absorption lacuna resorption lacuna. bone lacuna a small cavity within the bone matrix, containing an osteocyte, and from which slender canaliculi radiate and penetrate the adjacent lamellae to anastomose ...
irregular bone. bone of complex shape; protects internal organs from compressive forces. lacunae (singular = lacuna) spaces in a bone that house an osteocyte. long bone. cylinder-shaped bone that is longer than it is wide; functions as a lever. modeling. process, during bone growth, by which bone is resorbed on one surface of a bone and ...
Jul 30, 2022 · Anatomy of a Long Bone. A typical long bone shows the gross anatomical characteristics of bone. The structure of a long bone allows for the best visualization of all of the parts of a bone (Figure 1). A long bone has two parts: the diaphysis and the epiphysis. The diaphysis is the tubular shaft that runs between the proximal and distal ends of ...
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Like compact bone, spongy bone, also known as cancellous bone, contains osteocytes housed in lacunae, but they are not arranged in concentric circles. Instead, the lacunae and osteocytes are found in a lattice-like network of matrix spikes called trabeculae (singular = trabecula) (Figure 6.13). The trabeculae may appear to be a random network ...
