Question

how does the nervous system influence the respiratory system? (1 point)
it regulates blood pressure.
it stimulates defense against pathogens.
it regulates urine output.
it controls muscle contraction.

Explanation:

The nervous system controls the muscles involved in respiration like the diaphragm and intercostal muscles through nerve - impulses. Blood pressure regulation is mainly related to the cardiovascular and endocrine systems. Stimulating defense against pathogens is part of the immune system's function. Urine output regulation is mainly by the urinary system and hormonal mechanisms. Only muscle contraction control by the nervous system is relevant to the influence on the respiratory system.

Answer:

It controls muscle contraction.