the red marrow cavities of certain bones. 1) T 2) Bones are classified by whether they are weight-bearing or protective in function. 2) F 3) The trabeculae of spongy bone are oriented toward lines of stress. 3) F MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 4) The cell responsible for secreting the matrix of bone is the: A) osteoblast. 5) What kind of tissue is the forerunner of long bones in the embryo? C) hyaline cartilage
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minerals are stored in bones? Solid mineral crystals in your bones impart them with the strength and rigidity to support your body and withstand powerful physical stresses. Calcium and phosphorus are the most abundant minerals in your bones‚ together forming calcium phosphate crystals. Your bones contain roughly 99 percent of the calcium and 85 percent of the phosphorus in your body. Other minerals stored in your bones include magnesium and fluoride. 2.)Which type of bone provides a large‚ flat
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situation‚ an implant might be the best choice. Here are two of the main reasons why you should consider going with an implant. An Implant Helps Prevent Bone Loss The roots of your teeth stimulate your jaw and keep the bone strong and healthy. When you have a tooth pulled‚ the roots come out with it. Over time‚ the lack of stimulation in the bone causes it to recede. However‚ this can be prevented when you get an
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destroy you or make you stronger. When I was in the third grade at the ripe age of nine years old‚ I broke my arm and was diagnosed with a Unicameral Bone Cist (UBC) in my left humerus bone. This childhood disease causes a cyst to appear in the bone and eats the bone away. While my original orthopedic doctor thought I had cancer‚ I was sent to a bone specialist who not only identified the disease‚ but treated the disease as well. After my first surgery‚ I was told that I
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Our muscular system provides the main source of force to put our bodies into motion. More than 40% of our body mass is composed of muscle. Types of Muscular Tissue There are three types of muscle tissue: 1. Skeletal Voluntary movement‚ attached to bones. 2. Smooth Involuntary movement‚ found in digestive tract‚ circulatory system‚ etc. 3. Cardiac Involuntary movement‚ found only in heart. Muscle Contraction Skeletal Muscle Muscle fibers Myofibrils Filaments Two types of
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An X-ray or bone scan will usually confirm a stress fracture. To treat a stress fracture it is important to see a doctor as soon as possible as ignoring the pain could make the injury worse and result in a complete break. Until you can see a doctor you can follow
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Pivot joint: A rounded portion of a bone is enclosed within a ring formed partially by the articulation with another bone and partially by a ligament . The bone rotates within this ring. Since the rotation is around a single axis‚ pivot joints are functionally classified as a uniaxial diarthrosis type of joint. An example of a pivot joint is the atlantoaxial joint‚ found between the C1 (atlas) and C2 (axis) vertebrae. Here‚ the upward projecting dens of the axis articulates with the inner aspect
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Osteoarthritis are both diseases of the bone. Osteoporosis actually means “porous bones” and is a problem with bones where there isn’t enough calcium in them to give them strength. This is because the bone cells aren’t being reproduced as fast as the bone is aging or deteriorating which causes the bones to become fragile. This can happen because of loss of calcium in the bone‚ or a problem with the calcium being absorbed correctly‚ which it needs in order to build new bone tissue and complete the remodeling
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Associate Level Material Appendix E Comparing Physiology Worksheet In this assignment you describe and compare the circulatory‚ skeletal‚ and respiratory systems of sharks‚ iguanas‚ eagles‚ and humans. Answer each of the following questions in 25 to 50 words. Circulatory System * Shark * How would you describe the structure and function of this animal’s circulatory system? Include any unique characteristics. A shark’s heart is a two-chambered S-shaped tube‚ small in proportion
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the results of over contraction or overextending. Fractures or a break in the bone are other common sports injuries. There are two types of fractures; stress and acute fractures. Stress fractures occur from continuous stress on the bone. Sportsmen can also suffer dislocation‚ which is an injury that results when two connected bones are separated at the joint. Knee injuries are other common injuries and can range from a bone or cartilage
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