The main parts of long bone:
Yellow marrow: stores fat
There are two main types of bone:
- Epiphysis: an expanded end portion that is coated in articular cartilage and articulates (bones come together) with another bone
- Diaphysis: the shaft of the bone between the epiphysis
- Periosteum: the tough, vascular, covering of fibrous connective tissue that encloses the bone
- Medullary Cavity: compact bone in the diaphysis of long bone forms a hollow chamber lined by fibrous connective tissue and is filled with marrow
- Marrow: soft, net-like mass of connective tissue
Yellow marrow: stores fat
- Osteocytes: are bone cells that occupy small chamber called lacunae; the lacunae and extracellular matrix combines (lamella) form concentric circles around Haversion canals
- Haversion canals: is the central canal where osteocytes communicate with the cells nearby through cellular process that passes through the canaliculu
There are two main types of bone:
- Compact Bone- tightly packed tissue with continuous extracellular matrix and covers the walls of the diaphysis
Formed by many osteons (osteocytes and lamella cylinder-shaped) being cemented together
- Spongy bone- is composed of numerous branching bony plates and irregular connecting spaces; it composes the wall of the epiphysis
Composed of osteoctyes and extracelluar matrix within the traceculae
Lack central canals and get their nourishment from the bone marrow
To label the parts of a bone, visit http://highered.mcgraw-hill.com/sites/0072919329/student_view0/chapter7/labeling_exercises.html# and click the first link