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Neural Mechanisms – Control of Respiration (Nursing)
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Slides Respiratory System.pdf
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Reference List Physiology Nursing.pdf
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Download Lecture Overview
00:01 So how do we regulate our respiratory rhythms or how do we control our respiration? Respiratory rhythms are regulated by higher brain centers, chemoreceptors, and also other reflexes. 00:19 The neural controls are going to involve neurons that are found in the reticular formation of the medulla oblongata and the pons. 00:30 So starting with the medulla oblongata, we have what's known as medullary respiratory centers. 00:37 These are clustered neurons that are found in two areas of the medulla oblongata the most important of them being the ventral respiratory group and the dorsal respiratory group. 00:50 The ventral respiratory group is going to be more responsible for expiration while the dorsal respiratory group is more responsible for inspiration. 01:02 Also on the pons, we have pontine respiratory centers. 01:08 Neurons and these centres are going to influence and modify the activity of our ventral respiratory group on the medulla oblongata. 01:19 They act to smooth out their transitions between inspiration and expiration and vice versa. 01:27 So basically we're not where we breathe we're not really thinking about breathing. 01:31 We just have a rhythm to it and things can change but for the most part it's a pretty smooth transition from breathing in and breathing out. 01:41 And this is all controlled in that pontine respiratory center area. 01:47 The pontine respiratory center are the neurons in the center are going to transmit impulses to the ventral respiratory group that modify and fine-tune the breathing rhythms. 01:59 Also during vocalization such as when you're talking as well as while you're sleeping and while you're exercising. 02:08 If you have lesions or damage to this area of the brain this can lead to what's known as apneustic breathing and this is where the patient will take prolonged inspirations. 02:20 So their breathing pattern is not correct and that they're breathing in a little too long compared to what they need to do.
About the Lecture
The lecture Neural Mechanisms – Control of Respiration (Nursing) by Jasmine Clark, PhD is from the course Respiratory System – Physiology (Nursing).
Included Quiz Questions
What are the typical functions of pontine respiratory centers? Select all that apply.
- Influence and modify activity of ventral respiratory groups (VRGs)
- Act to smooth out transitions between inspiration and expiration and vice versa
- Transmit impulses to ventral respiratory groups (VRGs) that modify breathing rhythms during vocalization, sleep, and exercise
- Block impulses to ventral respiratory groups (VRGs) that modify and fine-tune breathing rhythms during vocalization, sleep, and exercise
- Inhibit exchange of carbon monoxide and carbon dioxide
Author of lecture Neural Mechanisms – Control of Respiration (Nursing)
Jasmine Clark, PhD
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