Multiple Choice
In the context of lung physiology, when a client is admitted with pneumonia, what should the nurse primarily assess?
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22. The Respiratory System
Introduction to Lung Physiology
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What is the primary function of the two respiratory centers located in the medulla oblongata?
A
To regulate the rate and depth of breathing
B
To filter and humidify the air entering the lungs
C
To control the exchange of gases in the alveoli
D
To initiate the cough reflex
Verified step by step guidance1
Understand the role of the medulla oblongata in the brain. It is a part of the brainstem that plays a crucial role in autonomic functions, including the regulation of breathing.
Identify the two main respiratory centers located in the medulla oblongata: the dorsal respiratory group (DRG) and the ventral respiratory group (VRG).
The dorsal respiratory group (DRG) primarily controls the basic rhythm of breathing by sending signals to the diaphragm and intercostal muscles to initiate inspiration.
The ventral respiratory group (VRG) is involved in both inspiration and expiration, especially during increased respiratory demand, such as during exercise.
Conclude that the primary function of these respiratory centers is to regulate the rate and depth of breathing, ensuring that the body maintains proper levels of oxygen and carbon dioxide.
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