General Respiratory Medicine Flashcards
To learn about respiratory medicine
Which area of the brain coordinates basic rhythm of breathing?
- Medullary rhythmicity area of the medulla oblongata
How is ventilation controlled and coordinated?
- Control of ventilation coordinated by respiratory centres, chemoreceptors, lung receptors and muscles
Where does automatic and involuntary control of respiration occur?
Medulla
What does the respiratory centres control?
Rate and depth of respiration
What are the respiratory centres of the brain?
- Medullary respiratory centre
- Apneustic centre
- Pneumotaxic centre
What is the Medullary Respiratory centre responsible for?
- Inspiratory and expiratory neurones
2. Controls forced voluntary expiration/expiration
What is the apneustic centre responsible for?
- In the lower pond
- Stimulates inspiration
- Activates and prolongs inhalation
- Overridden by pneumotaxic control to end inspiration
What is the pneumotaxic centre responsible for?
- In the upper pond
2. Inhibits inspiration at a certain point. Fine tunes respiratory rate
What are the peripheral chemoreceptors responsible for?
- Located at the bifurcation of if carotid arteries
2. Respond to reduced P02, inc PC02, inc H+ in ARTERIAL blood
What are central chemoreceptors responsible for?
- Located in medulla, respond to inc H+ on brain
Where does the phrenic nerve originate?
- C3,C4, C5
2. Supplies the Diaphragm and pericardium
Which of the thoracic vertebrae lies posterior to where the left main bronchus divides?
- T6
What are the inferior borders of the Lungs?
- 6th rib in the mid clavicular line
- 8th rib in mid axillary line
- 10th rib posteriorly
- The pleura tuns two ribs lower than lung level
If a PICC line is inserted into the basilica vein at elbow, where is it likely to pass from here?
- Basilica vein drains into axillary vein
Which of the paranasal sinuses is located on the roof of the posterior nasal cavity, inferior to the pituitary gland?
Sphenoid sinus