BIOA02H3 : Lec19 - Cardiorespiratory Regulation.doc

• School: UTSC
• Department: Biological Sciences
• Course: BIOA02H3
• Professor: Mary Olaveson

Document Summary

1 cardiorespiratory regulation: control of breathing, blood gas transport, regulation of cardiac output and blood pressure. There"s a network of neurons that functions together in order to generate a single breath. There are back-up control systems for breathing. If one region is failed, there are other regions that can take up the task. In the various regions of the brain a basic rhythm is produced integrated and amalgamated with feedback from a variety of central and peripheral control systems which come together and regulate breathing. Located on the ventral surface of the medulla. Senses carbon dioxide levels in the spinal fluid: oxygen chemo-receptors. Refers to arterial circulation: receptors in the aortic arch which senses low levels of blood oxygen, receptors in the lungs called stretch receptors: 3 central (brain) control of breathing: within the brain stem there are four major groupings of respiratory centers, pre-botzinger complex. Functions like a pacemaker: pontine respiratory group (prg)