Apneustic center
Encyclopedia
The apneustic center of the lower pons
appears to promote inspiration
by stimulation of the I neurons in the medulla oblongata
providing a constant stimulus.
The apneustic center of pons sends signals to the dorsal respiratory center
in the medulla
to delay the 'switch off' signal of the inspiratory ramp provided by the pneumotaxic center
of pons. It controls the intensity of breathing. The apneustic center is inhibited by pulmonary stretch receptors. However, it gives positive impulses to the inspiratory (I) neurons.
Pons
The pons is a structure located on the brain stem, named after the Latin word for "bridge" or the 16th-century Italian anatomist and surgeon Costanzo Varolio . It is superior to the medulla oblongata, inferior to the midbrain, and ventral to the cerebellum. In humans and other bipeds this means it...
appears to promote inspiration
Inhalation
Inhalation is the movement of air from the external environment, through the air ways, and into the alveoli....
by stimulation of the I neurons in the medulla oblongata
Medulla oblongata
The medulla oblongata is the lower half of the brainstem. In discussions of neurology and similar contexts where no ambiguity will result, it is often referred to as simply the medulla...
providing a constant stimulus.
The apneustic center of pons sends signals to the dorsal respiratory center
Dorsal respiratory group
The dorsal respiratory group is located in the dorsomedial region of the medulla, and is composed of cells in the solitary tract nucleus. The DRG is one of two known respiratory neuron localizations, with the other being the ventral respiratory group. The DRG is found in many types of fish and...
in the medulla
Medulla oblongata
The medulla oblongata is the lower half of the brainstem. In discussions of neurology and similar contexts where no ambiguity will result, it is often referred to as simply the medulla...
to delay the 'switch off' signal of the inspiratory ramp provided by the pneumotaxic center
Pneumotaxic center
The pneumotaxic center , also known as the pontine respiratory group , is a network of neurons in the rostral dorsal lateral pons. It consists of the Kölliker-Fuse nucleus and the medial parabrachial nucleus....
of pons. It controls the intensity of breathing. The apneustic center is inhibited by pulmonary stretch receptors. However, it gives positive impulses to the inspiratory (I) neurons.