Autonomic innervation of the lungs

The video tutorial explains the role of the nervous system in regulating the bronchial tree in the lungs. It covers the neurotransmitters involved in the sympathetic and parasympathetic nervous systems and their effects on the bronchial tree. The sympathetic nervous system uses norepinephrine to cause bronchodilation, aiding in the fight or flight response. In contrast, the parasympathetic nervous system uses acetylcholine to cause bronchoconstriction, increasing mucus secretion.

What are the two main parts of the nervous system involved in regulating the bronchial tree?

• Cerebral and Spinal

• Somatic and Autonomic

• Sympathetic and Parasympathetic

• Central and Peripheral

Which neurotransmitter is released by the sympathetic postganglionic neuron to cause bronchodilation?

• Acetylcholine

• Dopamine

• Norepinephrine

• Serotonin

What type of receptor does norepinephrine bind to in the bronchial tree?

• Nicotinic receptor

• Alpha adrenergic receptor

• Muscarinic receptor

• Beta adrenergic receptor

In the parasympathetic nervous system, what receptor does acetylcholine bind to in the lungs?

• Muscarinic receptor

• Alpha adrenergic receptor

• Beta adrenergic receptor

• Nicotinic receptor

What effect does the parasympathetic nervous system have on the bronchial tree?

• Bronchodilation

• Bronchoconstriction

• Increased heart rate

• Decreased mucus secretion