Osteoporosis Essay

1154 words - 5 pages

Marissa's Case

1.All bones are dense and they support the body while also giving the body structure. The two types of bones is spongy and compact. Spongy bones are not as dense as compact bones and are more flexible. Compact bones are a lot more dense and very tough.
Osteocytes are in the lacuna, osteocytes are there to help in bone deposition and resorption. When a bone becomes stressed or becomes damaged the osteocytes send messages to the other osteocytes to repair the bone. If the bones don't get repaired then over time the bones will become weak instead of becoming strong.
Osteoblasts is there to synthesize and mineralize. Osteoblast will become present when bones are remodeling
Basic multicellular unit is part of the bone remodeling process. The BMU travel around the skeletal system and find stressed or messed up bones. The BMU will dissolve in the area of the bone that is stressed or damaged and will fill that area with new bone.

2. Calcium is very important for the body. Calcium helps make the bones strong and dense, without calcium the bones will become weak. The body does not make calcium so the bones have to take the calcium from where it is stored in the body.

3.The calcium levels in the bones are controlled by a negative feedback mechanism. When the calcium in the bones are low the parathyroid hormone also known as PTH will release more of the hormone into the blood, this then stimulate the osteocytes which then causes the bone to breakdown. Then calcium will start to release into the blood stream. When there is to much calcium in the blood stream calcitonin is released . The calcitonin will stop the osteocytes from breaking down the bone. This keeps calcium from being released into the blood stream.

4.Osteoporosis is caused when new bone is not being made or the body is getting to much old bone. When the bone is damaged and bone remodeling doesn't happen it continues to breakdown. All parts of the remodeling system must function properly or the breakdown will cause stress and fractures.

5.Scientist know that osteoporosis is characterized by a decrease in the density of a bone or an increase of the fragility of the bones. People over the age of 60 are more likely to get osteoporosis and women are more likely than men. White's are more at risk as well.

6. Controllable Risk Factors of Osteoporosis: Body Weight, Smoking, Drinking to much caffeine, No exercise, and taking certain kind of medications they can help cause osteoporosis.
Uncontrollable Risk Factors or Osteoporosis: Race, Age, Sex, Family Genetics, Frame size, and Lifetime exposure to estrogen.

7. Many times the symptoms of osteoporosis arise when it is too late. Some symptoms are bone pain, tenderness of the bones, bone fractures with little or no trauma to them at all, lower back pain, loss of height, slouched poster, and muscle pain.

Jeremy's Case

1. Calcium is important to bone health because it is the key to remodeling the bone. If there isn't enough calcium...

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