What is the name of the cavities that house bone cells?
The medullary cavity (medulla, innermost part) is the central cavity of bone shafts where red bone marrow and/or yellow bone marrow (adipose tissue) is stored; hence, the medullary cavity is also known as the marrow cavity.
What is the name for the small holes within the matrix in which osteocytes sit?
In histology, a lacuna is a small space, containing an osteocyte in bone, or chondrocyte in cartilage. Section parallel to the surface from the body of the femur. X 100.
Where are osteocytes found in compact bone quizlet?
osteocyte, the primary cell of mature bone and the most common type of bone cell. Each osteocyte is located in a space called a lacuna and is surrounded by bone tissue.
Where are osteocytes found in bone?
lacunae Osteocytes (Ot) are located within lacunae surrounded by mineralized bone matrix (B).
What is medullary cavity?
The medullary cavity is the hollow part of bone that contains bone marrow. The bone marrow makes blood cells and stores fat. Spongy bone (also called cancellous bone) is made up of small, needle-like pieces of bone arranged like a honeycomb.
What are found in lacunae?
Bone cells that become surrounded by the bone matrix and are located in cavities called lacunae are the osteocytes, which are stellate-shaped due to the several dendritic projections. The dendritic projections of the osteocyte cells pass through tiny channels called canaliculi (or small canals).
Where are osteocytes found?
lacunae Osteocytes (Ot) are located within lacunae surrounded by mineralized bone matrix (B).
What is an osteocyte quizlet?
osteocyte. a mature bone cell formed when an osteoblast becomes surrounded by its own matrix and entrapped in a lacunae. canculi functions. to pass nutrients, waste removal, cell signals.
Where are osteoclasts found?
Osteoclasts occupy small depressions on the bone's surface, called Howship lacunae; the lacunae are thought to be caused by erosion of the bone by the osteoclasts' enzymes. Osteoclasts are formed by the fusion of many cells derived from circulating monocytes in the blood. These in turn are derived from the bone marrow.
Where are osteoblasts found?
Osteoblasts are located on the surface of bone and are responsible for synthesizing the organic components of the bone matrix. The organic components include primarily type I collagen (90% of bone protein), proteoglycans and glycoproteins; however, other proteins may be identified.
What is marrow cavity?
The medullary cavity is the hollow part of bone that contains bone marrow. The bone marrow makes blood cells and stores fat. Spongy bone (also called cancellous bone) is made up of small, needle-like pieces of bone arranged like a honeycomb.
Where are the osteocytes?
Osteocytes (Ot) are located within lacunae surrounded by mineralized bone matrix (B).
What is found in the medullary cavity?
Red bone marrow is primarily found in the medullary cavity of flat bones such as the sternum and pelvic girdle. This type of bone marrow contains hematopoietic stem cells, which are the stem cells that form blood cells.
Where are osteoclasts found quizlet?
They are located on the periosteal and endosteal surfaces of the bone. They function to regulate the movement of calcium and phosphate into and out of the bone. What is the origin of osteoclasts?
Where do osteocytes come from?
Osteocytes form when osteoblasts become buried in the mineral matrix of bone and develop distinct features. Residing within the lacuna of the mineralized bone matrix, osteocytes form dendritic processes that extend out from their cell bodies into spaces known as canaliculi.
Where are osteoclasts found in bone?
Howship lacunae Osteoclasts occupy small depressions on the bone's surface, called Howship lacunae; the lacunae are thought to be caused by erosion of the bone by the osteoclasts' enzymes. Osteoclasts are formed by the fusion of many cells derived from circulating monocytes in the blood. These in turn are derived from the bone marrow.
What is medullary cavity of bone?
The medullary cavity is the hollow part of bone that contains bone marrow. The bone marrow makes blood cells and stores fat. Spongy bone (also called cancellous bone) is made up of small, needle-like pieces of bone arranged like a honeycomb.
Where are osteocytes located?
lacunae Osteocytes (Ot) are located within lacunae surrounded by mineralized bone matrix (B).
Where are osteoblasts located?
Osteoblasts are located on the surface of bone and are responsible for synthesizing the organic components of the bone matrix. The organic components include primarily type I collagen (90% of bone protein), proteoglycans and glycoproteins; however, other proteins may be identified.
Where can you find osteocytes?
Between the rings of matrix, the bone cells (osteocytes) are located in spaces called lacunae. Small channels (canaliculi) radiate from the lacunae to the osteonic (haversian) canal to provide passageways through the hard matrix.