Module 03Lab Worksheet

Module 03Lab Worksheet - Pre-Lab Evaluation Questions 1...

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Pre-Lab Evaluation Questions 1. Compare and contrast the function of the three main types of bone cells. A: There are three types of bone cells they’re osteoblasts, osteoclasts, and osteocytes. Osteoblasts are the mature cells of the bone that are responsible for the production and mineralization of new bone. Osteoclasts are responsible for the removal of bone (osteoid and minerals) they help break down the bone matrix and continually breaking down old bone. Osteocytes, are the mature cells (the most common type of bone cell) and is found in open spaces in the bone called lacunae They have a thin layer of low-density bone (Different Medical Careers, 2013). 2. What role does collagen and hydroxyapatite have within bone tissue? A: Collagen has organic matter that provides strength, bone flexibility, and structure support. Hydroxyapatite is the inorganic matter that gives the bone its hardness. 3. How are osteopenia and osteoporosis diagnosed? Explain how an individual can increase and decrease their bone density? Provide a minimum of three specific examples for each. A: Osteopenia is measured by bone density which indivates the amount of minerlas, such as the calcium in your bones. The higher the bonedensity the stronger the the bone. Oteoporosis is tested by dual x-ray absorption. It measures peoples’s spine, hip, and or total body bone density. To help improve bone density you should walk 3-5 miles a week. Eating a well balanced diet, correcting calcium levels, and vitamin D 4 Compare and contrast compact bone and spongy bone regarding their location, bone cells, function and structure. A: Compact bone forms the outer shell of all bone and also the shafts in long bones. Location: marrow space (medulla cavity) Bone cells: osteoblasts & osteocytes. Function: support for the overall body and protects cancellous bone. Structure: consits of closely packed osteons Spongy bone Location: ends of long bones, ribs, vertabrae, and skull Bone cells: cancellous Function: they act as shock absorbers to provide structural support to faciitates movement of the joint and limbs. Structure: light, porous bone enclosing numerous large spaces that givve a honeycombed or spongy appearance. (2013) 5. What is the significance of red bone marrow and where is it found in the body? A:
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