Across
- Cancellous bone. (15)
- Part of osteoid. (15)
- Perforating canals. (15)
- Bone tissue; a hard, dense connective tissue that forms the structural elements of the skeleton. (14)
- Undifferentiated cell with high mitotic activity; the only bone cells that divide; they differentiate and develop into osteoblasts. (15)
- Spongy tissue inside bone. (11)
- Trabeculated osseous tissue that supports shifts in weight distribution. (11)
- Region, deep in the periosteal collar, where bone development starts during endochondral ossification. (27)
- Region of the epiphyseal plate that makes new chondrocytes to replace those that die at the diaphyseal end of the plate and contributes to longitudinal growth of the epiphyseal plate. (18)
- Haversian canal. (13)
- Broken bone. (8)
- Organ system composed of bones and cartilage that provides for movement, support, and protection. (15)
- Cluster of osteoblasts found in the early stages of intramembranous ossification. (19)
- Sheet of hyaline cartilage in the metaphysis of an immature bone; replaced by bone tissue as the organ grows in length. (16)
- Longitudinal channel in the center of each osteon; contains blood vessels, nerves, and lymphatic vessels. (15)
- Uncalcified bone matrix secreted by osteoblasts. (7)
- Production of blood cells, which occurs in the red marrow of the bones. (13)
- Prominent rounded surface. (4)
- Disease characterized by a decrease in bone mass; occurs when the rate of bone resorption exceeds the rate of bone formation, a common occurrence as the body ages. (12)
- Layer of spongy bone, that is sandwiched between two the layers of compact bone found in flat bones. (7)
- Surgical exposure of a bone to reset a fracture. (14)
- Lubricant or shock absorber. (17)
- Basic structural unit of compact bone; made of concentric layers of calcified matrix; also, Haversian system. (6)
- The part of a long bone that grows during development. (10)
- Flat surface. (5)
- Thin and curved bone; serves as a point of attachment for muscles and protects internal organs. (9)
- Thin plates. (8)
- Blood clot that forms at the site of a broken bone. (18)
- Bone markings where part of the surface sticks out above the rest of the surface, where tendons and ligaments attach. (10)
- Membrane that covers cartilage. (13)
- Air-filled space in bone. (5)
- Completely ossified remnant of the epiphyseal plate. (15)
- Holes and depressions. (5)
- Spikes or sections of the lattice-like matrix in spongy bone. (10)
- Part of cell membrane of an osteoclast. (14)
- Cube-shaped bone that is approximately equal in length, width, and thickness; provides limited motion. (10)
- Semi-rigid connective tissue found on the skeleton in areas where flexibility and smooth surfaces support movement. (9)
- Boundary of osteon. (11)
- Bone of complex shape. (14)
- Compact bone. (13)
- Fibrocartilaginous matrix, in the endosteal region, between the two ends of a broken bone. (15)
- Bone formation. (12)
- Haphazard organization of collagen fibers and mechanically weak. (10)
- Process by which bone forms directly from mesenchymal tissue. (28)
- Rounded surface. (7)
- Sharp process. (5)
- Part of rudimentary formation of long bones, length growth of long bones & healing of bone fractures. (23)
- Wide section at each end of a long bone; filled with spongy bone and red marrow. (9)
- Abnormally high levels of calcium. (13)
- Light, porous bone enclosing large spaces. (15)
- Small, rounded process. (8)
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Down
- Region of bone development in the epiphyses. (29)
- Connective tissue in the interior cavity of a bone where hematopoiesis takes place. (10)
- Cell responsible for forming new bone. (10)
- Cell responsible for resorbing bone. (10)
- Cylinder-shaped bone that is longer than it is wide; functions as a lever. (9)
- Groove. (6)
- Collar of hyaline cartilage and bone that forms around the outside of a fracture. (15)
- Region of the epiphyseal plate where chondrocytes from the proliferative zone grow and mature and contribute to the longitudinal growth of the epiphyseal plate. (34)
- Protruding. (12)
- Small opening in the middle of the external surface of the diaphysis, through which an artery enters the bone to provide nourishment. (16)
- Region of the epiphyseal plate that anchors the plate to the osseous tissue of the epiphysis. (12)
- Opening into canal. (6)
- Creating something. (9)
- Process in which bone forms by replacing hyaline cartilage. (25)
- Regular parallel alignment of collagen into sheets. (13)
- Region of the epiphyseal plate closest to the diaphyseal end; functions to connect the epiphyseal plate to the diaphysis. (21)
- Thin layer of cartilage covering an epiphysis; reduces friction and acts as a shock absorber. (19)
- Elongated basin. (5)
- Tubular shaft that runs between the proximal and distal ends of a long bone. (9)
- Delicate membranous lining of a bone’s medullary cavity. (9)
- Osteoblasts induce osteoclasts to break down bone matrix. (10)
- Abnormally low levels of calcium. (12)
- Pits in the bone surface. (15)
- Dense osseous tissue that can withstand compressive forces. (12)
- Ridge. (5)
- Channels in bone matrix housing an osteocyte’s cytoplasmic extensions. (10)
- Osteon. (16)
- Channel that branches off from the central canal and houses vessels and nerves that extend to the periosteum and endosteum. (17)
- Opening or depression in a bone. (4)
- Passage in bone. (5)
- Small pit. (5)
- Osteoclasts absorb the oldest ends of the bone spicules. (10)
- Hard, dense connective tissue that forms the structural elements of the skeleton. (4)
- Where two bone surfaces meet. (12)
- Manual manipulation of a broken bone to set it into its natural position without surgery. (16)
- Natural calcium apatite. (22)
- Slight, elongated ridge. (4)
- Slit through bone. (7)
- Fibrous membrane covering the outer surface of bone and continuous with ligaments. (10)
- Osteoblasts replacing osteoclasts at the site of bone turnover. (8)
- Hollow region of the diaphysis; filled with yellow marrow. (16)
- Hole through bone. (7)
- Rough surface. (10)
- Connective tissue in the interior cavity of a bone where fat is stored. (13)
- Process by which osteoclasts resorb old or damaged bone at the same time as and on the same surface where osteoblasts form new bone to replace that which is resorbed. (10)
- Small, round bone embedded in a tendon; protects the tendon from compressive forces. (13)
- Prominence feature. (7)
- Process, during bone growth, by which bone is resorbed on one surface of a bone and deposited on another. (8)
- Primary cell in mature bone; responsible for maintaining the matrix. (9)
- Spaces in a bone that house an osteocyte. (7)
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