A) Depolarizes the cells because Cl^- enters the cells
B) Depolarizes the cells because Cl^- leaves the cells
C) Hyperpolarizes the cells because Cl^- enters the cells
D) Hyperpolarizes the cells because Cl- leaves the cells
E) Depolarizes the cells because Ca²⁺ enters the cells

A) Circumvallate papillae at the back of the tongue
B) Foliate papillae in the anterior two thirds of the tongue
C) Fungiform papillae in the anterior two thirds of the tongue
D) Fungiform papillae at the back of the tongue
E) Taste buds in the pharynx

A) Amiloride
B) Ethacrynic acid
C) Acid
D) Ammonium
E) Cetylpyridinium chloride