These lacunae are found between narrow sheets of calcified matrix, known as lamellae. Individual lamellae range between 4um and 12um in thickness. Small channels radiate through the matrix, interconnecting lacunae and linking them to nearby blood vessels. These canaliculi contain cytoplasmic extensions of the osteocytes and their extensions provide a route for the diffusion of nutrients and waste products.
Microscopic organization of bone tissue can be divided into two bone types. Primary or woven bone is bone which is produced de novo by intramembranous or endochondral ossification. It has a highly irregular arrangement. Woven bone is weaker than lamellar bone due to the random organization of collagen fibers and greater number of osteocytes. Secondary or lamellar bone is highly organized mature bone. The collagen framework and mineralized matrix are arranged in lamellae or layers; collagen fibers of each lamella run in opposite helical directions to those in adjacent lamellae, thereby increasing the strength of the microscopic unit.
Lamellar bone exists in three forms: osteonal, circumferential, and interstitial. First, osteonal lamellar bone or the Haversian system is 200 mm cylindrical units comprised of 15-20 lamellae surrounding a 50mm neurovascular canal called the Haversian canal. Osteocytes contained in lacunae are located between lamellae and are interconnected by canaliculi. Haversian canals are joined by perpendicular vascular channels called Volkmann's canals. Endosteum lines the Haversian and Volkmann canals. In long bones, osteons run parallel to the long axis of the bone. Second, Circumferential lamellar bone are large scale lamellae adjacent to the pre-installed and endosteal surfaces of a long bone. Third, Interstitial lamellar bone are remnants of old Haversian systems that have been cut by remodeling units. .
Lamellar bone exists in two macroscopic arrangement based on its degree of porosity: Compact (cortical) bone or spongy (cancellous, trabecular) bone.
Rule of the Bone can be divided into three distinct sections. ... The development of Bone is most evident right here. ... It corrupted Doc, and Bone could end up the same way. This is the reason Bone decides to return to America. ... Bone's time in Jamaica is what really defines his life. ...
- The humerus is a long bone, the occipital is a flat bone, and the vertebrae is an irregular bone. ... Describe the structure and function of this type of bone. - The cavity of the vertebral body mainly consists of cancellous bone (spongy bone) tissue surrounded by a outer protective layer of compact bone. ... Spongy bone most of the time has red bone marrow where blood cells are produced. ... What type of bone makes up the majority of the diaphysis of long bones like the humerus? ... The bone during this process is remodeled to match the bone before the break. ...
Bone, a punk living in upstate New York, had finally found a safe place to settle in after running away from his abusive stepfather and oblivious mother. ... He couldn't let Bone, the boy he"d made to feel like nothing since the very beginning, see him in this state. ... It's apparent to Bone now that the only way he can possibly live with his mother again is if Ken is out of the picture forever. ... After this, Bone knew that his only real home was with I-Man, who, upon his return, was preparing to leave for Jamaica. Bone goes with him to see him off, but ends up buying a ticket ...
Introduction After the shocking discovery of a skeleton in a park, we are here to analyze the remaining bones to find the identity of the deceased person. ... We concluded this data by examining the Femur, Humerus, and Pelvis and comparing the bones to qualitative and quantitative data. ... Other methods that can be completed by the FBI is Bone marrow aspiration and DNA analysis. Bone marrow aspiration is a procedure used to collect and evaluate bone marrow. ... The Tibia was not recovered so we could not measure that bone. ...
Bone Marrow and Peripheral Blood Stem Cell Donation Bone marrow and peripheral stem cell donation is very essential to many people's lives. ... Bone marrow, according to www.bmtnews.org, is a spongy tissue found inside bones. ... The difference between the other two is that an allogeneic transplant is when the receiver of the bone marrow gets the bone marrow from a twin. ... For the donation of bone marrow, the physicians surgically take a part of the bone marrow from the back of the donors pelvic bone. ... The donor may experience bone pain for a while but it should calm down after abou...
AbrahamVan Brunt, known as Brom Bones, is Ichabod rival. ... Bones always had his eye on Katrina, but he notices that he is not the only one. He sees that Ichabod is trying to talk to her and Bones does not tolerate that. ... Bones went to Ichabod's school and messed everything up. ... Every girl wants to have a night shining armor and Brom Bones is the answer. ...
The Farming of Bones The Dominican Republic and Haiti are two countries sharing the same island, Haiti being the poorest country. ... In the Novel "The Farming of Bones- Señora Valencia's gave birth to twins. ...
BONES OF THE TMJ 1. Temporal bone 2. ... TEMPORAL BONE: a. ... They are located on the inferior aspect of the bone. ... Fibrous, located between the temporal bone and condyle of the mandible on each side b. ...
There are the long bones, short bones, flat bones, irregular, and the sesamoid. ... Flat bones are found in the cranium or the scapula and are sandwiches of spongy bone amid two layers of compact bone and are usually curved. Irregular bones are any bones that don't fit these arbitrary categories (bones of the face, vertebrae). ... The compact form of the bone is the solid part on the outside of the bone, and the cancellous form appears spongy and is on the ends of the bone inside the compact bone, supporting the end of the bone and transferring weight from the bone ends to the b...