PQCh2

Match the correct PSP effect with each ion channel action.

Which of the following cells are important for the removal of nerve cell debris?

The major symptom experienced by Katharyn D. in the chapter prologue was

Neuronal signals are carried across the synapse by

A synapse can involve a junction between an axon terminal and a(n) ________. (not dendrite or axon)

Which of the following is true of ion distribution across the axon membrane?

The specialized pores located in the axon membrane that open or close are termed

Subthreshold depolarizations of the axon membrane

________ are positively charged particles.

In a resting nerve cell, which of the forces listed below will act to push sodium ions into the cell? (not diffusion)

Activation of cells within the area postrema would be predicted to produce

The ________ is defined as the difference in electrical charge between the inside and the outside of the axon membrane.

Neuromodulators are?

The ________ contain(s) the nerve cell nucleus and functions to ______.

Cation is to anion as

The ________ neuron is the most common nerve cell type in the central nervous system. (not multiglial)

Movement of the axon membrane potential from -90 mV to -80 mV would be termed a(n)

In which portion of a neuron would you expect to find the largest number of vesicles?

Which of the following is true of an action potential?
a. an action potential requires 5 msec for completion
b. the potassium channels are opened at a lower voltage than are sodium channels (not this)
c. the sodium channels are opened at a lower voltage than are potassium channels
d. the overshoot is due to a prolonged change in sodium conductance
e. during an action potential, the interior becomes even more negative (not this)

A key advantage of saltatory conduction is that

An autoreceptor is located on the ________ and is sensitive to ________.

Which of the following glial cells are important for the supply of energy for neurons?

The force of ________ moves sodium ions ________ the axon

The "all-or-none law" refers to the observation that an action potential

Astrocytes perform which of the following functions?
(all of the above, so just note in everything they do)

Most ________ are secreted into the extracellular fluid from endocrine glands or tissues.

hormones

Movement of the axon membrane potential from -70 mV to -90 mV would be termed a(n)

Ions enter and leave the membrane of a myelinated axon at the

The ________ cells are the most important support cells of the central nervous system.

The membrane voltage level at which an action potential is triggered is termed the

The force of diffusion would tend to move ________ ions ________ the axon.

An impaired ability to sense temperature and touch might be expected after damage to which type of nerve cell?

Sensory stimuli that vary in intensity are coded by variations in the ________ of a neuron.

An electrical charge applied to an axon that moves the membrane potential from -70 mV to -45 mV will result in a(n)

The presence of a barrier between the blood stream and the brain is suggested by the observation that

________ are charged particles formed when certain molecules dissolves in water.

Which of the following is correct regarding neurons?

The physical gap between two nerve cells across which messages are transmitted is the

________ neurons gather information from the environment related to light, odors, and bodily contact with objects.

The process which terminates the postsynaptic potentials induced by most neurotransmitters is

________ are negatively charged particles.

The process of phagocytosis involves

________ neurons function to contract muscles.

Match up the receptor type with its action.
(metabotropic or ionotropic)

Which  cells are important for the immune system reaction to brain damage?

A key event for the release of neurotransmitter from the presynaptic membrane is the

The term ________ means "little bladder."

The process by which molecules are evenly distributed throughout a medium is

Which of the following is true regarding the action potential (AP)? (all of the above)

The process by which similarly charged particles repel each other and are thus distributed throughout a medium is termed

Neurotransmitter molecules are secreted from a(n) ________ in response to the arrival of an action potential.

Match up the receptor type with its action.

What will produce an EPSP?

The ________ is comprised of the brain and spinal cord.

The recipes for generating individual proteins are contained within the

Which of the following represents the normal order of activation in neuronal transmission?

Saltatory conduction is rapid because

The interior of a neuron at rest

Which of the following is a consequence of the activity of the sodium-potassium transporters?

Which of the following is true of neurotransmitter function?

A drug that inactivates AChE would be expected to? (it does not impair the synthesis of ACh.)

Which of the following events restores the membrane potential from the peak of the action potential back to the resting level?

The common structures or regions that form a neuron include the?
a. axon
b. cell body.
etc.

The ________ system is comprised of the nervous system outside of the brain and spinal cord.

Which of the following will reliably produce an IPSP regardless of the current level of the membrane potential?