ALS (amoytrophic lateral sclerosis) is a disorder that directly affects nerve cells that control movement. These nerve cells send impulses from the brain to control movement. When these nerve cells can no longer send messages for movement, much of the tissue involved with movement begins to atrophy (decline).
Based on organ system functions, which two organ systems are directly impacted by this disorder?
A-Muscular and skeletal
B-Muscular and respiratory
C-Nervous and muscular
D-Nervous and integumentary
To determine which two organ systems are directly impacted by ALS, we need to understand the functions of the organ systems involved.
A) Muscular and skeletal: The skeletal system provides structural support and protection, while the muscular system is responsible for movement. Although ALS affects movement, it primarily impacts the nerve cells that control movement, rather than the muscles or bones themselves. Therefore, option A is not the correct answer.
B) Muscular and respiratory: The respiratory system is responsible for breathing, while the muscular system enables movement. Since ALS affects the nerve cells that control movement, including those involved in breathing, option B is a possible answer.
C) Nervous and muscular: ALS directly affects the nerve cells that control movement (nervous system), leading to muscle atrophy. Therefore, option C is a possible answer.
D) Nervous and integumentary: The integumentary system consists of the skin, hair, and nails, and is primarily responsible for protection. ALS does not directly impact the integumentary system, so option D is not the correct answer.
Therefore, the two organ systems directly impacted by ALS are the muscular system and the nervous system. Options B and C are both correct answers.