Which of the following is a neurotransmitter?

• glucose

• hemoglobin

• acetylcholine

• collagen

how is a neurotransmitter released from the presynaptic neuron?

• diffusion

• active transport

• exocytosis

• endocytosis

the effect of a neurotransmitter on the postsynaptic neuron depends on:

• amount of neurotransmitter released

• distance between the neurons

• type of receptor on the postsynaptic membrane

• size of the presynaptic neuron

a change in the postsynaptic membrane potential that makes it more likely to generate an action potential

• inhibitory postsynaptic potential

• excitatory postsynaptic potential

• resting potential

• action potential

a change in the postsynaptic membrane potential that makes it less likely to generate an action potential

• excitatory postsynaptic potential

• action potential

• resting potential

• inhibitory postsynaptic potential

the summing of multiple postsynaptic potentials occurring at different locations on the neuron at the same time

• temporal summation

• spatial summation

• refractory period

• depolarization

the summing of multiple postsynaptic potentials occurring in rapid succession at the same synapse

• spatial summation

• repolarization

• temporal summation

• hyperpolarization

a group of neuron cell bodies located outside the central nervous system

• nucleus

• nerve

• tract

• ganglion

neurons that conduct nerve impulses from sensory receptors to the central nervous system

• motor neurons

• interneurons

• sensory neurons

• efferent neurons

neurons that transmit nerve impulses from the central nervous system to muscles or glands

• sensory neurons

• interneurons

• afferent neurons

• motor neurons