The shaft of a long bone is called a diaphysis 5. Periosteum functions t form and repair bone tissue 6. Periosteum is a tough, vascular, fibrous membrane covering the diaphysis of a bone 7. Processes provide sites for attachment of tendons or ligaments 8. The wall of the diaphysis is composed of compact bone 9.
It provides protection for such vital organs as the brain, heart and lungs, the marrow of bone produces new blood cells, and it aids the body in balancing acid and electrolytes. Bone is a connective tissue with a hardened matrix that is developed from calcium phosphate deposits. Calcification is the process that creates the hard tissue of bones. They come in various shapes and sizes, from flat bones
Bones are rigid and dynamic biological organs where a series of active cells resident and integrate into a stiff matrix and this structure physically support and protect the tissue and organs within our body. Bone stores minerals and bone marrow within bone structure produces new blood cells. over 270 pieces of bones are in infants’ body and several of them fuse together during growth. These bones are in different shapes and have complex and hierarchical structures. With different shapes, mechanical properties and biological activities, they act in a variety of roles for our body functions.
Marissa's Case 1.All bones are dense and they support the body while also giving the body structure. The two types of bones is spongy and compact. Spongy bones are not as dense as compact bones and are more flexible. Compact bones are a lot more dense and very tough. Osteocytes are in the lacuna, osteocytes are there to help in bone deposition and resorption.
The tight coupling of bone formation, achieved by osteoblast activity, and bone resorption, achieved by osteoclast activity, is w... ... middle of paper ... ...oaded bone when bone loads fall below the normal physiological range, for example, someone who experiences long term bed rest. The risk of fracture will ultimately increase with such a loss of bone mass and reduced strength. Thus the tight coupling of resorption and formation is key in the strengthening and maintenance of bone. In summary, bone remodelling is achieved by the tight coupling of osteoclast and osteoblast activity. Bone resorption is always followed be bone formation in a properly functioning remodelling unit, due to the breakdown of bone, thus releasing chemical signals attracting osteoblasts to the resorption pits for bone formation to occur.
All the types of the immune system involve cellular and humoral components which carry out protective functions. Cellular defences are used to differentiate whether an immune response is intervened by a certain type of cell. Cells such as the macrophages and the monocytes are involved with phagocytosis. These cells are all present in the myeloid lineage of the haematopoietic stem cells of the bone marrow. The stem cell is made up to two cells namely the myeloid progenitor and the lymphoid progenitor.
Irregularly arranged connective tissues are found in areas of the body where stress occurs from all directions such as the dermis of the skin. Regular fibrous connective tissue is found in tendons, which connect muscle to bone, and ligaments, which connect bones to other bones as
Osteoclasts are responsible for the breaking down of tissue. The osteoblasts and osteoclasts are both responsible for remodeling and rebuilding of bones as we grow and age. The production of osteoclasts for resorption is initiated by the hormone, the parathyroid hormone. Osteocytes are the mature versions of osteoblasts because they are trapped in the bone matrix they produced. The osteocytes that are trapped continue making bone to help with strength and the health of the bone matrix.
Intramembranous ossification mainly occurs during the formation of the flat bones of the skull, as well as the mandible, maxilla, and clavicles. The bone is formed from connective tissue such as mesenchyme tissue rather than from cartilage. The bone is formed from connective tissue such as mesenchyme tissue. Stem cells, mesenchymal initiate the process of intramembranous ossification. A small cluster of mesenchymal cells will begin to replicate and form a group of cells called a nidus.
During division, each cell has the ability of remaining as a stem cell or transforming into a cell with a more specific, specialized function. These cells, for example, could be cells such as a muscle cell, red blood cell, or even a brain cell. What makes these cells different from others is that they are capable of renewing themselves through cell division. As well, under certain conditions, they can develop into tissue or organ specific cells with unique functions. Stem cells, in organs such as the gut or in bone marrow, are capable of regularly dividing and repairing or replacing dam... ... middle of paper ... ...n able to find treatments to treat chronic kidney disease and heart failure, ischemic cardiomyopathey, and damaged gut of inflammatory bowel disease.