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Maintaining Life - Necessary Life Functions

(McLafferty, E. et al, 2012).
             Movement.
             The skeletal system is made up of joints, cartilage, ligaments and 206 bones that are organized together to create the body's overall structure and shape. The muscular system is made up of three types of muscles. Skeletal muscles which are also known as voluntary muscles. They are attached to the bone producing movement, maintaining body posture, and stabilizing joints. Smooth muscles which are also known as involuntary muscles. They are found in the digestive system in the stomach and in the urinary system in the bladder. The smooth muscle contracts and is elastic-like. Contraction of the muscle moves its content throughout the urinary and bladder system and the elasticity allows the walls of the organs to expand to create a temporary storage space. Finally, the cardiac muscle which is also known as an involuntary muscle is located in the heart which pumps blood throughout the body. The skeleton and muscles work together to provide the framework for the body and allow the body to perform daily activities and function normally. (Herlihy, B. L. 2014). .
             As you age bone density and the amount of muscle fibers within decrease putting the elderly at risk. Muscle efficiency decreases resulting in loss of strength and endurance. Movement slows and may become limited. Older people become tired more easily, and have less energy. Overall height decreases and bones become more brittle and may break more easily. Most elderly people are affected by joint changes, ranging from stiffness to arthritis. (Herlihy, B. L. 2014). .
             Responsiveness.
             The nervous system is made up of two main divisions the central nervous system (CNS) and the peripheral nervous system (PNS). The central nervous system consists of the brain and spinal cord where the peripheral nervous system consists of nerves throughout the body that carry information from one region of the body to another.


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