Question

Identify the 3 factors that affect breathing rate in order of greatest to least effect.

Answer 1

The factors that affect breathing rate in the order of greatest to least effect are chemical stimuli, physical activity, and emotional state.

Step-by-step explanation:

Factors That Affect Breathing Rate

The factors that affect breathing rate are as follows, in order of greatest to least effect:

1. Chemical Stimuli: The concentration of carbon dioxide (CO2) and pH in the blood act as primary chemical stimuli. An increase in CO2 and a decrease in pH stimulate the respiratory centres in the brain, resulting in an increase in breathing rate.
2. Physical Activity: Physical activity, such as exercise, increases the demand for oxygen and produces more metabolic waste, leading to an increase in breathing rate.
3. Emotional State: Emotional states such as excitement or anxiety can stimulate the brain, causing an increase in breathing rate.

These factors work together to regulate breathing rates.