People take 15 to 18 breaths per minute {breathing rate}. Volume rate is 0.5 liters per minute. Carotid-artery carotid sinus measures blood carbon dioxide and oxygen and sends signals to control breathing rate. Pons pneumotaxic center inhibits breathing after receiving signals from nerves that sense alveoli stretching. Medulla respiratory center sends excitatory signals along phrenic nerve to diaphragm. Pain increases breathing rate. Toxic or irritating gases inhibit breathing rate, at pharynx and larynx.
Biological Sciences>Zoology>Organ>Respiration
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Date Modified: 2022.0224