Neurotransmitters are released by_____ . a. axon terminals c. dendrites b. a neuron cell body d. glial cells

The morphological difference between bipolar neurons and unipolar neurons is_ and that determines how they are classified. a. the type of neurotransmitter they contain b. one is a Golgi Type I and the other is a Golgi Type II c. the number of axons that they have d. the number of different types of neurotransmitters they contain e. none of the above

Axons found around the area indicated by the arrow in the figure above are myelinated by A. astrocytes B. dorsal root ganglion cells C. microglia D. oligodendrocytes E. Schwann cells

Excitatory postsynaptic (EPSP'S) the resting membrane potentials A. have little or no effect b Hyperpolarize  c. do notchange    d. depolarize

Which of the following is/are found only in the PNS? a. Nerves b. Astrocytes c. Myelin d. Lipofuscin e. Unmyelinated axons

On what part of the neuron are NT receptors typically located?  If the activated NT receptors cause channels to open or change thus changing the diffusion of ions, what type of potential will this initially produce? A.Resting B.Graded C.Action D.Homeostatic

The axons of myelinated neurons are imbedded in a protective covering of A. Schwann cells B. gray matter. C. nodes of Ranvier D. synaptic knobs.

The cells responsible for the transmission of the nerveimpulse are ________. a. neuronsb. oligodendrocytesc. astrocytesd. microglia

Which of the following is true about the conduction of action potentials?  a. Thicker axons are faster because there is more surface area on thicker axons. b. Myelin speeds conduction because the glial cells add voltage gated Na+ channels to the neuron. c. Diffusion of Na+ ions between the Nodes of Ranvier happens faster than the wave of opening and closing membrane proteins can travel. d. Neurons that don’t have myelin sheaths undergo saltatory conduction e. Action potentials move slowly.

A drug is called an agonist if it ________.a. blocks a receptorb. interferes with neurotransmitter reuptakec. acts like the endogenous neurotransmitter bybinding to its receptord. blocks the voltage-gated calcium ion channel