Neurons and Neurotransmitters

Which of the following lists the main functions of neurons?

• receiving, integrating and transmitting information

• generating, sending and transmitting information

• sending, receiving and categorizing information

• generating, categorizing, and sending information

The basic parts of a neuron are

• vesicles, terminal buttons, synapse

• cell body, axon, dendrites

• myelin, nodes of Ranvier, axon terminals

• vesicles, axon, dendrites

_____ receive information from other neurons; ____ transmit information to other neurons

• axons; cell bodies

• synapses; dendrites

• dendrites; axons

• axons; dendrites

Emma has multiple sclerosis. If you could view her nervous system you would find

• a lack of neurotransmitter in some neurons

• areas where the dendrites are severely damaged

• areas where the myelin sheath is overgrown

• areas where the myelin sheath has degenerated

Faster neural impulses occur in

• uninsulated or unmyelinated axons

• shorter axons

• insulated or myelinated axons

• neurons with extensive dendrites

Neurotransmitters are secreted from the

• myelin sheath

• terminal buttons

• dendrites

• neuromodulators

Which of the following is the correct sequence of structures through which information flows in a neuron?

• dendrites to soma to axon

• axon to soma to dendrites

• glia to dendrites to axon

• dendrites to axon to glia

Both sodium and potassium ions

• carry a negative chare

• carry a positive charge

• are concentrated outside the neuron's cell body

• are concentrated inside the neuron's cell body

The tiny electrical charge that exists when a neuron is neither receiving or sending information is called

• an action potential

• a synaptic gap

• a resting potential

• a synaptic potential

The electrical charge that exists between the inside and the outside of a neuron when the neuron is neither receiving nor sending is approximately

• -1000 millivolts

• -60 to +70 millivolts

• +60 to +70 millivolts

• -60 to -70 millivolts