1. When sound waves reach your eardrum from a source in the environment, the ________ in the middle ear pick up the eardrum vibrations, amplify them, and pass them along by vibrating a membrane at the surface of the fluid-filled cochlea in the inner ear.
a. semicircular canals
b. hammer and anvil
c. ossicles
d. cochlea
2. There is evidence that when a neurotransmitter travels from the axon of one neuron to the dendrite of another neuron:
a. retrograde amnesia can result.
b. the neurotransmitter “jumps” across the synapse.
c. synaptic connections are damaged for a short time but recover quickly.
d. synaptic connections are strengthened.