Pharmacology Flashcards
1
Q
What effect does stimulation of the parasympathetic branch of the autonomic nervous system have on the airways?
A
- Bronchial smooth muscle contraction
- Increased mucus secretion
- Overall, increased airway resistance
2
Q
What is the dominate neuronal control in the airways?
A
Parasympathetic cholinergic innervation
3
Q
What nerve carries parasympathetic preganglionic fibres to the airways?
A
Vagus
4
Q
What mediates smooth muscle contraction in the airways?
A
Acetylcholine acting upon muscarinic Ach receptors.
5
Q
What mediates the increased mucus secretion?
A
Acetylcholine acting upon M3 muscarinic ACh receptors.
