BIOL 235 Chapter Notes - Chapter 6: Epiphyseal Plate, Hyaline Cartilage, Bone Marrow

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3 Feb 2020
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In a newborn all marrow is red: 6) triglyceride storage, yellow bone marrow consists mainly of adipose cells, adipose cells store triglycerides energy reserve. Initiate calcification: as osteoblasts surround themselves with ecm, they become osteocytes. Blast implies a cell that secretes ecm: osteocytes, mature bone cells, the main cell in bone tissue, maintain its daily metabolism exchange of nutrients and wastes with blood. Clast implies a cell that breaks down ecm: osteoclasts help regulate blood calcium level and are a target cells for drug therapy used to treat osteoporosis. Interstitial lamellae: the areas between neighboring osteons, contain lamellae and lacunae. Further increasing bone thickness: this process occurs repeatedly with additional periosteal blood. Igfs stimulate osteoblasts, promote cell division at the epiphyseal plate and in the periosteum, and enhance synthesis of the required proteins. In adulthood, sex hormones contribute to bone remodeling by slowing resorption of old bone and promoting deposition of new bone: slow resorption by promting apoptosis of osetoclasts.

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