Tuesday, October 26, 2010

Blog 5. Oct 26-Nov 5, 2010. Effect of aging on the skeletal System

2. Describe the effects of aging on the Skeletal system. You may choose two components of this system or all the components. Elaborate your answer as much as possible with examples and pictures.
Answer one of the questions below.


1. Why is the formation of bone affected by age? (address human development and its connection to bone development)  
Elaborate your answer as much as possible with examples and pictures


31 comments:

  1. Skeletal system:
    The skeletal system gradually changes over the years until it is porous and brittle, as the bones lose calcium and also their density. This may be more pronounced in women. As a result, you may become more prone to fractures, notice a decrease in height or even develop a stoop in your posture.

    Respiratory system:
    Decreased elasticity of the lungs may occur with aging. This may affect your lung's ability to utilize oxygen, as well as your ability to cough and take deep breaths. You may be more prone to fatigue and shortness of breath on exertion, and become more susceptible to infections.

    Muscular system:
    There tends to be a gradual loss of muscle tone, elasticity and strength. In some areas, the muscle is often replaced with fatty tissue leaving you with little rolls or soft, flabby spots. But what is more significant is that your endurance or strength to perform certain tasks may also decrease.

    digestive system:
    The digestive tract is a very resilient system, but there are some changes that occur which may cause you some distress. There is a gradual slowing of the system as well as a decrease in the secretion of saliva and enzymes which are necessary for digestion. As a result, there may be problems with indigestion, elimination and adequate absorption of nutrients.

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  2. Some skeletal system examples are: skull, vertebrae, sacrum, ribs, sternum, shoulder blade, humerus, tibia, fibula, carpals, metacarpals, phalanges. Plus some others in the hip and leg.

    The disease that effects the skeletal system is cancer.

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  3. 1. From birth through adolescence, more bone is produced than is lost during bone remodeling. In young adults, the rates of bone production and loss are about the same. As the levels of sex steroids diminish during middle age, especially in women after menopause, a decrease in bone mass occurs because bone destruction outpaces bone formation. Because women's bones generally are smaller than men's bones to begin with, loss of bone mass in old age typically causes greater problems in women. These factors contribute to a higher incidence of osteoporosis in women. Aging has two main effects on the skeletal system: Bones become more brittle and lose mass. Bone brittleness results from a decrease in the rate of protein synthesis and in the production of human growth hormone, which diminishes the production of the collagen fibers that give bone its strength and flexibility.

    2. With aging, the bones gradually lose calcium. As a result they become more fragile and are more likely to break, even with minor falls. Healing of fractures is also slower in the old than in the young. As a result, you may become more prone to fractures, notice a decrease in height or even develop a stoop in your posture.

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  4. The bony skeleton is a organ that serves both a structural function, providing mobility, support, and protection for the body, and as the storehouse for essential minerals.

    Aging has two main effects on the skeletal system: Bones become more brittle and lose mass. Bone brittleness results from a decrease in the rate of protein synthesis and in the production of human growth hormone, which diminishes the production of the collagen fibers that give bone its strength and flexibility.
    With aging, the bones gradually lose calcium. As a result they become more fragile and are more likely to break, even with minor falls. Healing of fractures is also slower in the old than in the young.

    * Two Components of skeletal System

    The sacrum is composed of 5 fused bones, while the coccyx, or tailbone, is typically made up of 3 to 5 bones.

    The vertebral column is composed of 24 individual vertebrae, along with two sets of fused bones called the sacrum and coccyx. In addition to providing support for the trunk of the body, the vertebral column protects the spinal cord. There are 7 cervical, or neck vertebrae; 12 thoracic, or upper back, vertebrae; and 5 lumbar, or lower back, vertebrae.

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  6. By:Elisha Watson
    1.)Changes in some people’s posture as they age. And bone density can be lost, and the spinal vertebrae can be compressed or it can make the trunk look shorter or curved. Joints may be less flexible it all depends.
    2.) When it comes to aging, the bones will lose calcium. As a result they become more fragile which means bones break easily . Healing of fractures is also slower in the old people than younger people.

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  7. Qunesha Lee:
    1.As a person grows from fetal life through childhood, puberty, and finishes growth as a young adult, the bones of the skeleton change in size and shape. These changes can be seen by x-ray. The "bone age" of a child is the average age at which children reach this stage of bone maturation. A child's current height and bone age can be used to predict adult height.

    At birth, only the metaphyses of the "long bones" are present. The long bones are those that grow primarily by elongation at an epiphysis at one end of the growing bone. The long bones include the femurs, tibias, and fibulas of the lower limb, the humeri, radii, and ulnas of the upper limb (arm + forearm), and the phalanges of the fingers and toes. The long bones of the leg comprise nearly half of adult height. The other primary skeletal component of height is the spine and skull.

    As a child grows the epiphyses become calcified and appear on the x-rays, as do the carpal and tarsal bones of the hands and feet, separated on the x-rays by a layer of invisible cartilage where most of the growth is occurring. As sex steroid levels rise during puberty, bone maturation accelerates. As growth nears conclusion and attainment of adult height, bones begin to approach the size and shape of adult bones. The remaining cartilaginous portions of the epiphyses become thinner. As these cartilaginous zones become obliterated, the epiphyses are said to be "closed" and no further lengthening of the bones will occur. A small amount of spinal growth concludes an adolescent's growth.

    2.

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  8. 1. Bone density can be lost, and spinal vertebrae can be compressed, making the trunk look shorter or curved. Joints may be stiffer and less flexible.
    Exercise can help to slow or prevent bone and muscle loss, and good nutrition, including calcium, can help seniors maintain strength and good health.



    2. Bone mass begins to reduce between the ages of 30 and 40. Osteoblast activity (bone production) begins to decline, while osteoclast activity (bone reabsorption) continues at a normal level. Once reduction begins, women lose roughly 8% of their skeletal mass, but not all parts of the skeleton are equally affected. Epiphyses (the head of the long bones), vertebrae, and the jaws reduce at a faster rate, resulting in more fragile limbs, weight reduction, and tooth loss.

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  9. 2)Skeletal system gradually changes over the years until it is porous and brittle, bones lose calcium and density. in women. , become more prone to fractures.


    The Spine and Feet
    •During aging, vertebrae become thinner, the spine compresses, and the padding between the vertebrae wears away, making the trunk of the body look shorter. The arch of the foot bone lessens, contributing to the apparent loss of height.
    Joints
    •Joints become less flexible as we get older, and minerals can calcify in areas like the shoulder. The bones of finger joints become thicker, and hips and knees can begin to degenerate, sometimes requiring surgical replacement.


    Read more: Changes in the Skeletal System Due to Age | eHow.com http://www.ehow.com/facts_5847486_changes-skeletal-system-due-age.html#ixzz13y15IgyP

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  10. the bones loss calcium and the bone mass reduces. your joints become less flexible and your toes and fingers become thicker. Your posture change because the spine is aging. Your bones become more fragile and will break easier and heal slower.
    Thanks Bitjocka for everything

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  11. the skeletal and muscular are very associated with each other. the bones help the muscules move. in the skeletal system the bone density can be lost.Also the bones may become less flexible and very stiff.Sometimes minerals in the bone decreases. Most of the time bones lose alot of mass over a long period of time. which is a diesease called osteporosis. Which is mainly responsible for hip fractures. Ligaments, connective tissues between bones, become less elastic. The cushion begins to break down for use of the life spand. women usually get menopause. the ankle become very little with aging. people tend to move slower and sometimes they are unable to walk

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  12. 1. As a child grows the epiphyses become calcified and appear on the x-rays, as do the carpal and tarsal bones of the hands and feet, separated on the x-rays by a layer of invisible cartilage where most of the growth is occurring.The bone age of a child is the average age of children's reach this stage of bone maturation.

    2. In the prime of your life the bones are the strongest and thickest. As you age food intake does not keep up with the calcium that you loose. The body steals calcium from your bones making them weaker, thinner and more Brittle.

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  13. 1. The formation of bone is affected by age because as we get older our bones get more dense and get longer and our cartilage hardens due to the more calcium intake and also so our skeleton can adjust to our body size and organs according to height and weight.

    2.The effects that aging has on the skeletal system are we young and adults our bones are pretty much healthy and are full of calcium but as we get older into our seniority age our bones get more fragile and brittle therefore our skeletal system is prone to more diseases like osteoporosis, etc.

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  14. you can recognize changes in some people’s posture as they age. Bone density can be lost, and spinal vertebrae can be compressed, making the trunk look shorter or curved. Joints may be stiffer and less flexible.
    Muscles can become less dense, making the arms and legs look thinner. Muscle tissue may also become less flexible, and muscles can lose tone, which is harder to replace.

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  15. We recognize changes in some people’s posture as they age. Bone density can be lost, and spinal vertebrae can be compressed, making the trunk look shorter or curved. Joints may be stiffer and less flexible. the skeletal and muscular are very associated with each other. the bones help the muscules move. in the skeletal system the bone density can be lost.Also the bones may become less flexible and very stiff.Skeletal system gradually changes over the years until it is porous and brittle, bones lose calcium and density. in women. , become more prone to fractures.

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  16. Why is the formation of bone affected by age? Bone density can be lost, and spinal vertebrae can be compressed, making the trunk look shorter or curved. Joints may be stiffer and less flexible. Muscles can become less dense, making the arms and legs look thinner. Muscle tissue may also become less flexible, and muscles can lose tone, which is harder to replace.Exercise can help to slow or prevent bone and muscle loss, and good nutrition, including calcium, can help seniors maintain strength and good health

    http://adam.about.com/encyclopedia/Aging-changes-in-the-bones-muscles-joints.htm

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  17. 1.)Changes in posture and gait (walking pattern) are as universally associated with aging as changes in the skin and hair.

    The skeleton provides support and structure to the body. Joints are the areas where bones come together. They allow the skeleton to be flexible for movement. In a joint, bones do not directly contact each other. Instead, they are cushioned by cartilage in the joint, synovial membranes around the joint, and fluid.

    Muscles provide the force and strength to move the body. Coordination is directed by the brain but is affected by changes in the muscles and joints. Changes in the posture and gait, weakness, and slowed movement are caused by changes in the muscles, joints, and bones.

    2.)Some changes that may occur in the cardiovascular system are a decrease in the elasticity of the blood vessels and heart valves, restricted blood flow due to the thickening of the vessel walls and because of the fatty deposits lining the vessels, and a decrease in the ability of the heart to pump out as much blood with each beat. As a result, you may feel fatigued, become short of breath more easily and have less capacity for physical exertion.

    With aging, the bones gradually lose calcium. As a result they become more fragile and are more likely to break, even with minor falls. Healing of fractures is also slower in the old than in the young. Recent advances in orthopedic surgery, with the replacement of parts of a broken bone or joint with new structures or the introduction of metallic pegs to hold broken parts together, have been of great value to elderly people.

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  18. Skeletal system:
    Over time the skeletal system goes through changes. When vertebrates are first being born, their bone are very fragile. As you get older and your body progress your bones starts to get stronger. In due time as your bones get too old they start to lose calcium and their density. The main objects for the skeletal system is to support the body. This may be more pronounced in women. As a result, you may become more prone to breakage in your bones, notice a decrease in height. There is no such thing as getting shorter, but as you age you begin to crouch over, or you may not be able to stand up striaight like you once could.

    Lack of Vitmain D & improper nutrition are two components that has an effect on the aging of skeletal systems. Without these two components the skeletal system may become weak.

    Examples: The pop singer Prince. Was once the best dancer in the business. Now as Prince has gotten older the pop singer/dancer now needs an hip replacement.

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  19. Some age-related changes, such as wrinkles and grey hair, are inevitable. It was once thought that changes to muscles, bones and joints were unavoidable too. However, researchers now propose that many factors associated with ageing are due to inactivity.Also Bone density can be lost, and spinal vertebrae can be compressed, making the trunk look shorter or curved. Joints may be stiffer and less flexible.

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  20. 1.Throughout life bones constantly change through a process of absorption and formation called remodeling. As we age,the balance between bone absorption and bone formation changes, resulting in a loss of bone tissue.

    2.In the prime of your life the bones are there strongest and thickest. as you age you food intake does not keep up with the calcium that you loose. The body steals calcium from your bones making them weaker, thinner and more Brittle . When you young you put a lot of stress on the bones and that makes them strong as you age you don't stress the bones as much and they loose that strength because they don't need to put up with the abuse that they did years earlier

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  21. As one grows from puberty, adolescence through young adult. Everybody knows that the types of our skeleton keep growing size and shape. These changes can be seen by x- rays.
    This can call maturation. A Childs current height and bone age can be used to predict adult height. As do the carpal and tarsal bones of the feet and also hands, well basically most all your body, separated on the x-rays by a layer of invisible cartilage where most of the growth is occurring. But I think all these consist in milk because it’s proteins and also Juice because it’s calcium.
    But most of them factors contribute to a higher incidence of osteoporosis in women

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  22. BreAnna Kennedy

    Effects of Aging On the Skeletal System:
    With aging the bones lose calcium. They become more fragile and break. To prevent this one should eat healthy and exercise daily. The typical adult will lose muscle mass, according to the sex and muscle activity. At the cellular level, muscles lose both cross-sectional area and fiber numbers, with type II muscle fibers being the most effected by aging. Eating properly and exercising will prevent the bones from aging so quickly and being affected by the aging process.

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  23. bony skeleton is a organ that serves a structural function.it provide mobility, support, and protection for the body.
    The aging process has only two effects on the skeletal system. They are the Bones which become more brittle and can lose mass. Bone brittleness can cause decrease in rate of protein synthesis and production of human growth hormone, which diminishes the production of the collagen fibers that give bone its strength and flexibility.
    With aging, the bones gradually lose calcium. As a result they become more fragile and are more likely to break, even with minor falls. Healing of fractures is also slower in the old than in the young.

    Two Components of skeletal System

    sacrum is composed of 5 fused bones. while the coccyx, or tailbone, is typically made up of 3 to 5 bones.

    Vertebal column is composed of 24 individual vertebrae, along with two sets of fused bones called the sacrum and coccyx. In addition to providing support for the trunk of the body, the vertebral column protects the spinal cord. There are 7 cervical, or neck vertebrae; 12 thoracic, or upper back, vertebrae; and 5 lumbar, or lower back, vertebrae.

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  24. some age-related changes, such as wrinkles and grey hair, are inevitable. It was once thought that changes to muscles, bones and joints were unavoidable too. However, researchers now propose that many factors associated with ageing are due to inactivity.Also Bone density can be lost, and spinal vertebrae can be compressed, making the trunk look shorter or curved. Joints may be stiffer and less flexible.

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  25. its alot of things that effect the bones. one thing is puberty. Puberty is the process of physical changes by which a childs body becomes an adult body and capable of reproduction.The body takes calcium from your bones making them weaker, thinner and more Brittle.as you age, the weaker your bones will get. the bone also hads the ability to adjust to what your doin over a period of time. for example, if you alwasys sit with a curve in you back, then you will have a humpback when you get older.

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  26. the structure of the bone changes by the age because basically When vertebrates are first being born, their bone are very fragile. As you get older and your body progress your bones starts to get stronger. Joints are the areas where bones come together. They allow the skeleton to be flexible for movement.

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  27. Skeletal system are examples that are: the skull, vertebrae, sacrum, ribs, sternum, shoulder blade, humerus, tibia, fibula, carpals, metacarpals, phalanges,and some are in the hip and leg.

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  28. Bone density can be lost, and spinal vertebrae can be compressed, making the trunk look shorter or curved. Joints may be stiffer and less flexible. Muscles can become less dense, making the arms and legs look thinner. Muscle tissue may also become less flexible, and muscles can lose tone, which is harder to replace. You will start to see many changes in their apperances as they get older

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  29. The effects that aging has on the skeletal system are we young and adults our bones are pretty much healthy and are full of calcium but as we get older into our seniority age our bones get more fragile and brittle therefore our skeletal system is prone to more diseases like osteoporosis, etc.

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  30. . As a person grows from fetal life through childhood, puberty, and finishes growth as a young adult, the bones of the skeleton change in size and shape. These changes can be seen by x-ray. The "bone age" of a child is the average age at which children reach this stage of bone maturation. A child's current height and bone age can be used to predict adult height.

    ReplyDelete