NPB 113 Lecture Notes - Lecture 33: Intercostal Muscle, Retene, Control Of Ventilation
3 Apr 2021
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" control alters respiratory rate and tidal volume lateral new of brainstem pneumotaxic center. Bt - pre - botzinger complex ventral respiratory group ( vrg) Cpg : central pattern generator that generates respiratory rhythm. Neurons self - depolarize to generate action potentials automatically. " control activity of the dro and vrg. " note : evidence also suggests that pacemaker cells are scattered throughout the medulla rather than organized into a group. D neurons that innervate the lower motor neuron) intercostal muscles diaphragm and external. Frequency of ap at start of inspiration is slow. As inspiration continues , ap frequency t. Shut off at the top of inspiration. Results in expiration ventral respiratory group cvrg ) Inspiratory neurons in rostral and intermediate vrg connect to inspiratory muscles in the thorax. Expiratory neurons in the caudal vrg connect to lower motor neurons. Deep inhalations apnea ( no breathing ) gasping partial release.
