Which of the following is an example of the interaction between the circulatory and respiratory organ systems in a human?

a.
the pancreas produces a rush of insulin when a child eats a lollipop.
b.
the toe of a standing woman hurts when a rock falls on it.
c.
the heart of a running man beats faster than the heart of a resting man.
d.
the nutrients in food are mechanically broken down in the stomach.

A5-year-old boy suddenly begins coughing while eating peanuts. he is choking and gagging. when he is brought to the ed, but he is awake and is able to give his name. on physical examination, his vital signs are stable. on examination of the chest, inspiratory stridor and intercostal and suprasternal retractions are apparent. which of the following is the most appropriate initial step in management? - allow patient to clear foreign object by spontaneous coughing- clear oropharynx with multiple blind sweeps with finger- position patient and perform back blows- stand behind patient and perform abdominal thrusts- perform emergency tracheostomy and take to surgery