Osteoblast

I really found the chapters challenging this week! Every week, I am more amazed at how complex our bodies are. The amount of different systems, and processes needed to maintain homeostasis constantly. The complex way the body heals itself, is amazing as well. The first year of our lives, our skeletal system replaces itself 100 percent. The rest of our lives, it slows down to replacing about ten percent of itself yearly. That is a huge difference!! Bones remodel themselves in a lifelong process…

cells die at the broken ends. These dead bone cells are remove by osteoclasts. 2.Bone generation - phagocytic cells clear away the dead cells and capillaries grow again. Fibroblast produce collagen fibers that connect the broken bone ends, while osteoblasts start to form spongy bone, these two enter the area. The repair tissue (fibrocartilaginous callus) is composed of both hyaline and fibrocatilage. 3.Bony callous formation - fibrocatilaginous callus is converted into bony callus. It takes…

consolidation can be treated with bone remodeling, and the adaptation of skeleton is applied to “calcium homeostasis” and to mechanical use. The bone remodeling involves the bone resorption regarding to osteoclasts and bone formation relating to osteoblasts. Regular bone-related diseases including “bone-metastasized cancers”, Paget’s disease, multiple myeloma, and osteoporosis are caused by the disproportion between the resorption and formation processes. The increased deterioration of health…

makes blood and the yellow marrow stores fat. The bone marrows purpose it to make blood cells. 9. Calcium moves into bone osteoblast cells to create new bone and osteoclasts break down bone. The two hormones that are involved are parathyroid and calcitonin which helps control blood calcium levels. Calcitonin is released by the thyroid gland holds back osteoclasts and makes osteoblast, which decreases blood calcium levels. 10. There are four stages of bone repair after a fracture, they are: 1.…

The three forms of skeletons in the animal kingdom are: hydrostatic skeletons, exoskeletons, and endoskeletons. Hydrostatic skeletons are found in cnidarians, worms, and many mollusks. It consists of a fluid filled sac in which the fluid is good support, however, it is formless. Animals with hydrostatic skeletons have two sets of antagonistic muscles (muscles that work in opposition to each other). These muscles are longitudinal muscles and circular muscles, which both help the animal maintain…

Upon looking at the concentration levels of both osteoclast and osteoblast, there was a significant decrease in functional osteoblast, which help with new bone formation, and an accelerated increase in osteoclast formation (Kilbarger,…

The Genus Bordetella Bordetella are catalase positive, asaccharolytic, aerobic, gram positive rods, whose optimal growth is at 35° to 37°C. Disease 1. Species of Bordetella is known to cause respiratory diseases like whooping cough, pneumonia, and sinusitis. 2. There are eight species of Bordetella that cause different diseases including Bordetella parapertussis, Bordetella bronchiseptica, Bordetella avium, Bordetella hinzii, Bordetella holmessi, Bordetella trematum, Bordetella pertussis,…

The Process of the Skeletal System The human body consists of around 300 bones at birth, but as the body grows, the bones shrivel up and decrease to 206 bones. Those 206 bones form the skeletal system. Each bone varies in shape and size. The skeletal system is much more than framework for the body. The skeletal system has many functions. The skeletal system is composed of dynamic living tissues and it interacts with all of the other organ systems. The skeletal system even remodels its self.…

bone has completed its growth in length. Cartilage cells are produced by mitosis and are destroyed and also replaced by bone on diaphyseal side of the plate. Zone of calcified cartilage contains mostly dead chondrocytes invaded by osteoclasts and osteoblasts, zone of resting cartilage firmly joins the epiphyseal plate to the epiphysis, zone of proliferating cartilage is where chondrocytes divide to replace those at the diaphyseal side of the epiphyseal plate and zone of hypertrophic cartilage is…

reshape the bones from injuries like fractures. Osteoblasts secrete new bone tissue while osteoclasts break down the old bone tissues. The body signals the correct amount of growth through parathyroid and growth hormones as well as vitamin D, steroids, and calcitonin. 2. Compare and contrast bone growth and remodeling. • Bone growth is the increase in length in the long bones. Bone growth occurs during childhood and adolescents. This process uses osteoblasts and…