How does the nervous system influence the respiratory system?(1 point)
Responses
It stimulates defense against pathogens.
It stimulates defense against pathogens.
It regulates blood pressure.
It regulates blood pressure.
It regulates urine output.
It regulates urine output.
It controls muscle contraction.
It controls muscle contraction.
The nervous system influences the respiratory system by controlling muscle contraction.
The correct answer is: It controls muscle contraction.
The nervous system is responsible for controlling and coordinating the activities of the body, including muscle contraction. In the case of the respiratory system, the nervous system plays a vital role in controlling the muscles involved in breathing.
When you inhale, the diaphragm and intercostal muscles contract, expanding the chest cavity, and allowing air to enter the lungs. When you exhale, these muscles relax, reducing the chest cavity and pushing air out of the lungs. This process is controlled by the respiratory center in the brainstem, which receives signals from the nervous system.
The nervous system sends signals to the respiratory muscles, instructing them to contract or relax, depending on the needs of the body. For example, during physical activity or in response to low oxygen levels in the blood, the nervous system increases the rate and depth of breathing to meet the increased demand for oxygen. Similarly, during relaxation or sleep, the nervous system reduces the rate and depth of breathing.
Therefore, the nervous system plays a crucial role in influencing the respiratory system by controlling muscle contractions involved in breathing.