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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 centre of pons sends signals to the dorsal respiratory centre in the medulla to delay the 'switch off' signal of the inspiratory ramp provided by the pneumotaxic centre of pons. It controls the intensity of breathing.
The pons apneustic center stimulates/prolongs inspiration
See also
External links
- Description at vcu.edu
- Physiology at MCG 4/4ch6/s4ch6_10
- Diagram at colorado.edu
Respiratory system, physiology: respiratory physiology | |
---|---|
Volumes |
lung volumes - vital capacity - functional residual capacity - respiratory minute volume - closing capacity - dead space - spirometry - body plethysmography - peak flow meter - thoracic independent volume - bronchial challenge test |
Airways |
ventilation (V) (positive pressure) - breath (inhalation, exhalation) -respiratory rate - respirometer - pulmonary surfactant - compliance - hysteresivity - airway resistance |
Blood |
pulmonary circulation - perfusion (Q) - hypoxic pulmonary vasoconstriction - pulmonary shunt |
Interactions |
ventilation/perfusion ratio (V/Q) and scan - zones of the lung - gas exchange - pulmonary gas pressures - alveolar gas equation - hemoglobin - oxygen-haemoglobin dissociation curve (2,3-DPG, Bohr effect, Haldane effect) - carbonic anhydrase (chloride shift) - oxyhemoglobin - respiratory quotient - arterial blood gas - diffusion capacity - Dlco |
Control of respiration |
pons (pneumotaxic center, apneustic center) - medulla (dorsal respiratory group, ventral respiratory group) - chemoreceptors (central, peripheral) - pulmonary stretch receptors - Hering-Breuer reflex |
Insufficiency |
high altitude - oxygen toxicity - hypoxia |
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