Question 1

Reuptake is the absorption of:

Accepted Answer

A)  neurotransmitters by the postsynaptic neuron. 
B)  neurotransmitters by the presynaptic neuron. 
C)  nutrients and waste products by glial cells. 
D)  neurotransmitters by glial cells. 
A)  neurotransmitters by the postsynaptic neuron. 
B)  neurotransmitters by the presynaptic neuron. 
C)  nutrients and waste products by glial cells. 
D)  neurotransmitters by glial cells.

Question 2

Nicotine directly stimulates receptors in the central nervous system and at nerve-muscle junctions. These nicotinic receptors are also receptors for which neurotransmitter?

Accepted Answer

A)  glutamate 
B)  dopamine 
C)  serotonin 
D)  acetylcholine 
A)  glutamate 
B)  dopamine 
C)  serotonin 
D)  acetylcholine

Question 3

Why is the speed of conduction through a reflex arc slower than the speed of conduction of an action potential along an axon?

Accepted Answer

A)  Transmission between neurons at synapses is slower than along axons. 
B)  The longer an axon, the slower its velocity. 
C)  Interneurons have thicker axons than other neurons. 
D)  There are greater amounts of myelin involved in the reflex arc. 
A)  Transmission between neurons at synapses is slower than along axons. 
B)  The longer an axon, the slower its velocity. 
C)  Interneurons have thicker axons than other neurons. 
D)  There are greater amounts of myelin involved in the reflex arc.

Question 4

Spatial summation refers to:

Accepted Answer

A)  multiple weak stimulations that occur in rapid succession. 
B)  a decrease in responsiveness after repeated stimulation. 
C)  multiple weak stimulations that occur at the same time. 
D)  an increase in the strength of action potentials after repeated stimulation. 
A)  multiple weak stimulations that occur in rapid succession. 
B)  a decrease in responsiveness after repeated stimulation. 
C)  multiple weak stimulations that occur at the same time. 
D)  an increase in the strength of action potentials after repeated stimulation.

Question 5

In general, a single neuron releases ____ neurotransmitter(s) and can respond to ____ neurotransmitter(s).

Accepted Answer

A)  one; many 
B)  dozens of; only one 
C)  several; only one 
D)  several; many 
A)  one; many 
B)  dozens of; only one 
C)  several; only one 
D)  several; many

Reuptake is the absorption of:

Nicotine directly stimulates receptors in the central nervous system and at nerve-muscle junctions. These nicotinic receptors are also receptors for which neurotransmitter?

Why is the speed of conduction through a reflex arc slower than the speed of conduction of an action potential along an axon?

Spatial summation refers to:

In general, a single neuron releases neurotransmitter(s) and can respond to neurotransmitter(s).

The Major Issues

Nerve Cells and Nerve Impulses

Anatomy of the Nervous System

Development and Plasticity of the Brain

Vision

The Other Sensory Systems

Movement

Wakefulness and Sleep

Internal Regulation

Reproductive Behaviors

Emotional Behaviors

The Biology of Learning and Memory

Cognitive Functions

Mood Disorders and Schizophrenia

Filters

Exam 3: Synapses

Reuptake is the absorption of:

Nicotine directly stimulates receptors in the central nervous system and at nerve-muscle junctions. These nicotinic receptors are also receptors for which neurotransmitter?

Why is the speed of conduction through a reflex arc slower than the speed of conduction of an action potential along an axon?

Spatial summation refers to:

In general, a single neuron releases ____ neurotransmitter(s) and can respond to ____ neurotransmitter(s).

The Major Issues

Nerve Cells and Nerve Impulses

Anatomy of the Nervous System

Development and Plasticity of the Brain

Vision

The Other Sensory Systems

Movement

Wakefulness and Sleep

Internal Regulation

Reproductive Behaviors

Emotional Behaviors

The Biology of Learning and Memory

Cognitive Functions

Mood Disorders and Schizophrenia

Filters

In general, a single neuron releases neurotransmitter(s) and can respond to neurotransmitter(s).