Dorsal respiratory group
Dorsal Respiratory Group
The Dorsal Respiratory Group (DRG), pronounced as /ˈdɔːrsəl rɪˈspɪrətɔːri ˈgruːp/, is a collection of neurons located in the Medulla oblongata of the brainstem. It is primarily responsible for initiating the basic rhythm of respiration.
Etymology
The term "Dorsal Respiratory Group" is derived from its location and function. "Dorsal" refers to the back or rear side, indicating the group's position in the medulla oblongata. "Respiratory" refers to its role in controlling respiration, and "Group" signifies a collection of neurons.
Function
The Dorsal Respiratory Group primarily controls the inspiratory muscles, particularly the diaphragm and the external intercostal muscles. It sends signals to these muscles to contract, leading to inhalation. The DRG is active during both quiet and forced breathing.
Related Terms
- Medulla oblongata: The part of the brainstem where the Dorsal Respiratory Group is located.
- Neurons: The nerve cells that make up the Dorsal Respiratory Group.
- Respiration: The process of inhaling and exhaling, which the Dorsal Respiratory Group helps to regulate.
- Diaphragm: The primary muscle of respiration, controlled by the Dorsal Respiratory Group.
- Intercostal muscles: Muscles used in respiration, also controlled by the Dorsal Respiratory Group.
See Also
External links
- Medical encyclopedia article on Dorsal respiratory group
- Wikipedia's article - Dorsal respiratory group
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