QuestionSBA
QuestionChoice
These provide sympathetic stimulation through beta-2 adrenergic receptors, leading to bronchodilation.
10006502
b
T2-T4 sympathetic trunk ganglia
QuestionChoice
The vagus nerve provides parasympathetic stimulation to the airways through muscarinic ACh receptors, leading to bronchoconstriction.
10006501
a
Vagus nerve
QuestionChoice
This provides motor innervation to the cricothyroid muscle. The recurrent laryngeal nerve then provides motor innervation for all other intrinsic muscles of the larynx.
10006504
d
External branch of superior laryngeal nerve
QuestionChoice
These provide innervation to the pleura. The phrenic nerve innervates the mediastinal pleura and the majority of the diaphragmatic pleura, causing referred pain in C3-C5 dermatomes (shoulder tip pain). The intercostal nerves supply the costal pleura, causing pain to be felt in relation to the thoracic wall.
10006503
c
Phrenic nerve (C3-C5) and intercostal nerves (T1-T11)
QuestionChoice
This provides sensory innervation to the larynx above the level of the vocal cords.
10006505
e
Internal branch of superior laryngeal nerve
Concept
Chapter
2693
4514
Innervation of the respiratory system
Topic
150
Respiratory physiology
13847
What nerve causes bronchoconstriction of the airways?
a