Exam 3: Cells of the Nervous System

Protein structures on the postsynaptic neuron that have recognition sites on the extracellular side and G proteins on the intracellular side are known as

Which type of glia actually helps guide the regrowth of axons following injury?

Following exocytosis,it is very important for calcium to be

A Von Economo neuron is a special type of _________ neuron

What is an axon hillock,and why is it important in electrical signaling?

The neurotoxin tetanospasmin,which produces the condition tetanus,invades the central nervous system by

Excitatory postsynaptic potentials (EPSPs)occur in response to the opening of

Conduction of action potentials in a myelinated axon is referred to as

Near the peak of the action potential,which type of ion begins to leave the cell?

Neurons with short axons that communicate primarily with adjacent cells are known as _________ neurons.

What is an interneuron?

Integration of inputs from many synapses on the postsynaptic neuron is known as

While Dr.Jackson is recording the activity of a squid axon,he finds that a larger depolarizing shock is necessary on occasion in order to produce a new action potential.What is the most likely explanation for Dr.Jackson's observations?

If a membrane potential changes from -70 mV to -75 mV,

The tendency for molecules to distribute themselves equally within a medium is known as

Once an action potential occurs at the axon hillock,why is it replicated at the next node of Ranvier?

Ion pumps differ from ion channels in that

The glia that participate in the formation of the blood-brain barrier are the

A single Schwann cell may myelinate

Potassium ions (K+)are pushed ____________________ the cell by diffusion and ____________________ the cell by electrical force.