Lecture 7- Breathing Rate And Homeostasis Flashcards
Which part of the brain regulates the medulla?
Pons
Which part of the pons causes a gasp when stimulated?
Apneustic centre
Which part of the pons is used for ‘fine tuning’ of ventilation?
Pneumotaxic centre
Which part of the brain can voluntarily override the pons?
Cortex
Which part of the brain is involved in emotional breathing?
Hypothalamus
What innervates the external intercostal muscles?
Intercostal nerves T1-T11
What innervates the diaphragm?
Phrenic nerve (C3, C4, C5 keeps the diaphragm alive!)
What are the peripheral chemoreceptors?
Carotid bodies and aortic bodies
What do central chemoreceptors decency a change in?
H+ in cerebrospinal fluid
What do carotid chemoreceptors detect a change in?
Pacarbondioxide, Poxygen and pH
What do aortic chemoreceptors detect a change in?
Pacarbondioxide and Poxygen
What is function of stretch receptors?
Inhibits inspiration during excessive inspiration
What happens to the H+ formed by the carbon dioxide equilibrium (Henderson-Hasselbalch equation)?
Excreted in urine
What is the Henderson-Hasselbalch equation?
Carbon dioxide + water carbonic acid bicarbonate + hydrogen ions
What happens to the bicarbonate formed by the carbon dioxide equilibrium?
Reabsorbed into the blood within the kidney
