5. Which of the following body systems does not rely on the autonomic nervous system to stimulate involuntary events?

A. skeletal system
B. digestive system
C. circulatory system
D. respiratory system

My Answer skeletal systems

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agree

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To determine which of the listed body systems does not rely on the autonomic nervous system to stimulate involuntary events, we need to have an understanding of the autonomic nervous system and its functions.

The autonomic nervous system (ANS) is responsible for regulating the body's involuntary functions. It controls processes such as heart rate, digestion, respiration, and even pupillary response. The ANS has two divisions: the sympathetic and parasympathetic divisions.

Now let's examine the options:

A. The skeletal system: The skeletal system consists of bones, joints, and muscles. It plays a role in providing structure, support, and movement but is not involved in involuntary events regulated by the autonomic nervous system. Therefore, the skeletal system does not rely on the autonomic nervous system.

B. The digestive system: The digestive system breaks down food and absorbs nutrients. It involves a series of involuntary processes such as peristalsis (muscular contractions) to move food along the gastrointestinal tract. These processes are regulated by the autonomic nervous system.

C. The circulatory system: The circulatory system, including the heart and blood vessels, is responsible for transporting oxygen, nutrients, and waste products throughout the body. The autonomic nervous system regulates heart rate and blood vessel constriction/dilation, among other things.

D. The respiratory system: The respiratory system is involved in the exchange of oxygen and carbon dioxide in the lungs. Breathing is an automatic and involuntary process that is primarily controlled by the autonomic nervous system.

Based on this analysis, the correct answer is A. The skeletal system does not rely on the autonomic nervous system to stimulate involuntary events.