The Skeletal System

By: Kelsey Klein

Functions of the Skeletal System

The skeletal system provides support, movement, protection, blood cell production, calcium storage, and also endocrine regulation.
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Major Organs:

Joints

Joints form where bones meet and most move freely. There are a few exceptions of joints that do not move, like joints in the skull, for example. There are six types of joints: Fixed joint, Ball-and-socket joint, Ellipsoidal joint, Hinge joint, Semi-movable joint, Plane joint, Saddle joint and the Pivot joint.
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Ligaments

Ligaments are in every joint in the body. When two bones meet, a ligament connects them. They have elasticity, so they can change shape and lengthen. Ligaments decide how much a joint can move, and also keep joints from dislocating. Ligaments also protect bones and can absorb shock under stress. Ligaments work to keep joints functioning correctly.
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Cartilage

Cartilage is tough, semi-transparent, elastic and flexible connective tissue. It's covered by a dense fibrous membrane. Cartilage starts as a model and gradually becomes bone (called ossification), except for ear cartilage and nose cartilage. There are many different types of cartilage. First, there's Hyaline cartilage, which occurs in the trachea, larynx, between ribs and breastbone, and ends of the bone that form joints. It reduces friction in joints. White Fibrocartilage are discs between the vertebrae and pubic bones. They absorb shock. Lastly, Elastic cartilage are in the lobe of the ear, the epiglottis and parts of the larynx. They maintain shape.
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Homeostatic Imbalances:

Osteoporosis

Osteoporosis is a decrease in strength and amount of bone tissue due to a decrease of hormone output. The symptoms are back pain, gradual loss of height with stooped posture, and fractures of the spine, wrist or hip. Treatments include taking calcium, vitamin D, weight-bearing exercises, preventing falls and bone-friendly medicines.
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Paget's Disease

Paget's Disease is characterized by irregular thickening and softening of bones due to accelerated remodeling process. The cause is unknown, but the symptoms are bone pain, large head, fractures, headaches, hearing loss, reduced height, and warmth over the affected bone. Drug therapy prevents further bone break down. Bisphosphonate is one that is used to increase bone density.

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Autoimmune Arthritis

Autoimmune Arthritis starts when the body attacks itself and its joints. Symptoms are warmth, redness, swelling and pain. Treatments focus on managing pain and controlling the immune system to prevent further damage.

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The Effects of Bad Posture on the Skeletal System

Article Here!


Basically, this article says that your posture has an effect on your skeletal system that you don't notice. Improper posture creates misalignment along the spinal column. Failure to correct bad posture has bad implications for the skeletal system. For example, poor posture puts stress on the connective discs causes them to wear down quicker, therefore, cause a lack of height.

Bibliography

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