1. General anesthetics open potassium channels, allowing potassium ions to leak out of the neuron. This a. increases firing in pain-inhibiting centers in the brain. b. increases firing in the neuron...

1. General anesthetics open potassium channels, allowing potassium ions to leak out of the neuron. This a. increases firing in pain-inhibiting centers in the brain. b. increases firing in the neuron until it is fatigued. c. hypopolarizes the neuron, preventing firing. d. hyperpolarizes the neuron, preventing firing. 2. When the action potential arrives at the terminal button, entry of _____ ions stimulates release of transmitter. a. potassium b. sodium c. calcium d. chloride