MRCP UK EXAMINATIONS

RESPIRATORY

BRONCHIECTASIS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The inspiratory and expiratory centers are located in the
A
medulla.
B
pons.
C
cerebellum.
D
diaphragm.
Explanation: 

Detailed explanation-1: -The respiratory center is located in the medulla oblongata and is involved in the minute-to-minute control of breathing. Unlike the cardiac system, respiratory rhythm is not produced by a homogeneous population of pacemaker cells.

Detailed explanation-2: -The pontine respiratory group is located in the dorsal lateral pons and contains both inspiratory and expiratory neurons.

Detailed explanation-3: -The VRG is located in the ventrolateral region of the medulla as shown in Figure 6.6. 3. It has both inspiratory or I neurons that fire action potentials during the inspiratory phase of the respiratory cycle, and expiratory or E neurons that fire action potentials during the expiratory phase.

Detailed explanation-4: -The respiratory center is located in the medulla oblongata and pons, in the brainstem. The respiratory center is made up of three major respiratory groups of neurons, two in the medulla and one in the pons. In the medulla they are the dorsal respiratory group, and the ventral respiratory group.

Detailed explanation-5: -The Medulla Its main function is to send signals to the muscles that control respiration to cause breathing to occur. There are two regions in the medulla that control respiration: The ventral respiratory group stimulates expiratory movements. The dorsal respiratory group stimulates inspiratory movements.

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