NEET PG DENTAL EXAM

Detailed explanation-1: -The parasympathetic nervous system constricts bronchial smooth muscle. Bronchoconstriction (the constriction of bronchioles due to the contraction of bronchial smooth muscle) reduces the amount of air entering the lungs. In a state of rest, the demands of the body are lower and increased respiration is not required.

Detailed explanation-2: -Stimulation of the parasympathetic nervous system results in: Construction of pupils. Decreased heart rate and blood pressure. Constriction of bronchial muscles.

Detailed explanation-3: -Parasympathetic nerves supplying the lung, travel in the vagus nerve, maintain airway tone and play a prominent role in airway narrowing (bronchoconstriction) and in mucus secretion [22].