ANATOMY 328 Lecture Notes - Lecture 29: Epiphyseal Plate, Blood Vessel, Scapula
Document Summary
Periosteal arteries and veins: nerves accompany blood vessels through the nutrient foramen, medullary cavity, yellow marrow. In the diaphysis (medullary cavity) important site for energy reserve: red marrow. Intramembranous ossification: begins during week 8 of development, 1. Ossification centers appear in the fibrous ct membrane: 2. Bone matrix (osteoid) is secreted within the fibrous membrane and calcifies: 3. Woven bone (random layed down patterns of bone that connect and get vascularity: condense to make periosteum, 4. Increase in diameter: interstitial growth (cartilage only, growth in middle, chondrocytes within cartilage divide and secrete a new matrix, appositional cartilage growth, growth on the outside (periphery) of cartilage, 1. Stem cells at the edge of the perichondrium divide: 2. Results in new stem cells and chondroblasts positioned at the periphery of the original cartilage: 3. Chondroblasts lay down matrix, separate, and become chondrocytes within lacunae: appositional bone growth, growth occurs along the periphery of the bone, 1.
