9. Neural Control of Breathing Mechanoreceptors -Respiratory muscle -Lungs: Pulmonary stretch receptor Chemoreceptors -Carotid bodies -Aortic bodies Medullary respiratory Center (RC center) CN IX,X CN X -Phrenic n (C3-5) - Intercostal n (T2-T12) Larygopharyngeal m. Bronchoconstrictors CN IX