Control of Breathing And blood gas primer Flashcards
To regulate gas exchange
What nervous system does not control breathing
somatic
What is the innervation of the pharynx and larynx
Cranial nerves
What is the motor innervation of the pump muscles of the diaphragm
Phrenic nerve Cervical plexus (c3,c4,c5 keeps the diaphragm alive)
What is the motor innervation of the pump muscles of the Intercostal muscles
t1-t12
What is the motor innervation of the pump muscles of the Abdominal muscles
Thoracic and lumbar
What is the Pre-Bötzinger
pacemaker region
What are the peripheral chemoreceptors
Carotid bodies, aortic arch
Dyspnoea
Breathing discomfort
What causes Extraluminal forces
Gravitational forces
Adipose tissue
what causes Neuromuscular forces
Dilator muscles actively dilate and or stiffen the pharynx ( keep the trachea open)
What does type 1 respiratory failure include
Hypoxaemic failure (abnormally low 02)
Low Pao2
Normal or low PaCO2
What does type 2 respiratory failure include
Ventilatory failure
Low PaO2 and raised
High PaCO2
Alveolar ventilation is reduced
In blood analysis, what do we look at first
blood pH
What is acidosis
Low blood pH
What is base excess
Assuming changes in production from the kidneys (acid) and the ingestion of metabolic acids is the same and the difference between actual and theoretical is the base excess in mmol.1-1
