HLSC 1200U Lecture Notes - Lecture 6: Medullary Cavity, Bone Marrow, Epiphyseal Plate
Document Summary
Forming the framework of the body: muscles, nerves, tissues can hang on the skeleton. Bony boxes to protect more delicate tissue (skull, ribcage, vertebrae) Bones with joints make levers that move as muscles contract. Myeloid tissue found in red bone marrow in spongy bone erythropoeisis (rbc formation), leucopoeisis (wbc formation) Similar structure to long bones: compact bone: external bone (internal. B & external table a: cancellous bone (spongy bone): inner region of bone (diploe) c. Periosteum and endosteum: lining covering inside and outside of bone: red marrow: found inside the cancellous bone. Structure: hollow, cylindrical in shape, thick compact bone. Function: to provide strong support without heavy weight. Location: both ends of long bone, spongy bone filled with red marrow. Function: provide attachment sites for muscles, stability to joints, blood cell production, housing for red marrow. Location: covers the articular surface of the epiphyses. Function: wear + tear protection, cushion for jolts and blows.
