CSB346H1 Lecture Notes - Lecture 8: Vagus Nerve Stimulation, Pulmonary Stretch Receptors, Inferior Ganglion Of Vagus Nerve
Document Summary
Csb346 lecture 8 airway and pulmonary reflexes (march 19, 2013) The last two lectures talked about how the cns and pns detect chemical stimuli (e. g. , co2 and. O2) and how changes in those chemicals impact respiration. They are not sensitive to changes in a chemical. It is a mechanical message rather than a chemical message. Airway reflexes encompass everything from the nostrils to the larynx. Anything below the larynx is a pulmonary reflex. Breathing rhythm is generated by a network of neurons in the brainstem. They control the motoneurons and muscles that allow thoracic expansion and contraction. This affects the pressure changes that ultimately drive thoracic expansion and contraction (e. g. , ventilation). If the mechanoreceptor is not being stretched, it is not being activated. If the mechanoreceptor is being stretched, it affects how the mechanoreceptor would send information back up to the brain.
