The ________ is shared by the respiratory and digestive systems.
A) pharynx
B) esophagus
C) trachea
D) windpipe
E) right mainstem bronchus
Question 2
If the receptor on the postsynaptic membrane binds to norepinephrine, the synapse is called
A) cholinergic.
B) anergic.
C) adrenergic.
D) synergic.
E) noradrenergic.