Question 1

In a mixed nerve,

Accepted Answer

A)   some axons transmit sensory information and others transmit motor information.
B)   individual axons transmit both sensory and motor information.
C)   chemical synapses occur along with electrical synapses.
D)   astrocytes are interspersed with ependymal cells.E) B) and D)
F) A) and C)

Question 2

In order to trigger the release of neurotransmitter from a neuron terminal, calcium ions

Accepted Answer

A)   exit the synaptic knob through diffusion.
B)   bind to proteins on the surface of synaptic vesicles.
C)   penetrate the synaptic vesicles and bind to molecules of neurotransmitter.
D)   bind to ion channels on the neuron membrane and cause them to open for the transmitter.E) A) and D)
F) None of the above

Question 3

The glial cell that defends the body against pathogens is the

Accepted Answer

A)   astrocyte.
B)   ependymal cell.
C)   neurolemmocyte.
D)   microglial cell.
E)   oligodendrocyte.F) A) and C)
G) All of the above

Question 4

The monoamine that has functions related to sleep, appetite, cognition, and mood is

Accepted Answer

A)   dopamine.
B)   serotonin.
C)   norepinephrine.
D)   acetylcholine.
E)   epinephrine.F) A) and B)
G) A) and C)

Question 5

After an impulse, the ________ refractory period is the time when it is possible to initiate another impulse, but it requires a stronger than usual stimulus.

Accepted Answer

The answer of After an impulse, the ________ refractory period...

Question 6

Imagine a genetic mutation that resulted in a malfunctioning inactivation gate in a voltage-gated sodium channel. The defective gate wouldn't always open and close when it should. What functional problems would this cause for the neurons?

Accepted Answer

Neurons' axons would not fire action pot...

Question 7

Neurotransmitter is released from the synaptic knob by exocytosis, and it then diffuses across the synaptic cleft.

Accepted Answer

A) True 
 B)False

Question 8

Anterograde transport is the movement of materials from synaptic knobs to the cell body.

Accepted Answer

A) True 
 B)False

Question 9

Along an axon, the gaps between neurolemmocytes are called neurofibril ________.

Accepted Answer

The answer of Along an axon, the gaps between neurolemmocytes...

Question 10

The portion of the nervous system that conducts impulses from the skin, joints, skeletal muscles, and special senses is the ________ division.

Accepted Answer

A)   autonomic motor
B)   somatic sensory
C)   somatic motor
D)   visceral sensoryE) A) and D)
F) A) and C)

Question 11

To measure the resting potential of a neuron, a physiologist would place

Accepted Answer

A)   two electrodes inside the neuron.
B)   one microelectrode inside the neuron and another in the interstitial fluid.
C)   one electrode inside the cell and another inside another cell.
D)   one electrode inside the cell and another outside the body.E) B) and D)
F) B) and C)

Question 12

Spinal nerves extend from the spinal cord, whereas ________ nerves extend from the brain.

Accepted Answer

The answer of Spinal nerves extend from the spinal cord,...

Question 13

The afferent division of the nervous system is also known as the ________ division.

Accepted Answer

A)   motor
B)   cranial
C)   ganglial
D)   efferent
E)   sensoryF) All of the above
G) B) and D)

Question 14

When multiple presynaptic neurons release neurotransmitter at various locations onto the postsynaptic neuron at the same time, this results in

Accepted Answer

A)   suprathreshold hyperpolarization.
B)   temporal summation.
C)   spatial summation.
D)   several action potentials.E) C) and D)
F) A) and B)

Question 15

Continuous conduction of a nerve impulse occurs only along

Accepted Answer

A)   myelinated axons.
B)   dendrites.
C)   unmyelinated axons.
D)   axons in the PNS.
E)   axons in the CNS.F) All of the above
G) B) and E)

Question 16

There are two types of synapses, based on mode of communication. What are they?

Accepted Answer

A)   Mechanical and chemical
B)   Magnetic and physical
C)   Physical and chemical
D)   Chemical and electrical
E)   Mechanical and electricalF) C) and E)
G) A) and C)

Question 17

The glial cell that myelinates and insulates axons in the peripheral nervous system is the

Accepted Answer

A)   astrocyte.
B)   ependymal cell.
C)   neurolemmocyte.
D)   microglial cell.
E)   oligodendrocyte.F) A) and E)
G) A) and B)

Question 18

The electrochemical gradient refers to

Accepted Answer

A)   the difference in concentration of a substance between two areas.
B)   the difference in electrical charge between two areas.
C)   the combination of electrical and chemical gradients between two areas.
D)   the resistance a membrane has to allowing any charged chemical to pass through it.E) All of the above
F) A) and B)

Question 19

Which part of the neuron contains the nucleus?

Accepted Answer

A)   Dendrite
B)   Axon
C)   Soma
D)   Axon hillock
E)   Synaptic knobF) B) and E)
G) A) and B)

Question 20

Typically, a multipolar neuron has many dendrites and one axon extending from the cell body.

Accepted Answer

A) True 
 B)False

Exam 12: Nervous System: Nervous Tissue

When multiple presynaptic neurons release neurotransmitter at various locations onto the postsynaptic neuron at the same time, this results in

Correct AnswerverifiedShow Answer

To measure the resting potential of a neuron, a physiologist would place

Correct AnswerverifiedShow Answer

The glial cell that myelinates and insulates axons in the peripheral nervous system is the

Correct AnswerverifiedShow Answer

Neurotransmitter is released from the synaptic knob by exocytosis, and it then diffuses across the synaptic cleft.

Correct AnswerverifiedShow Answer

In order to trigger the release of neurotransmitter from a neuron terminal, calcium ions

Correct AnswerverifiedShow Answer

The afferent division of the nervous system is also known as the ________ division.

Correct AnswerverifiedShow Answer

The glial cell that defends the body against pathogens is the

Correct AnswerverifiedShow Answer

In a mixed nerve,

Correct AnswerverifiedShow Answer

There are two types of synapses, based on mode of communication. What are they?

Correct AnswerverifiedShow Answer

Continuous conduction of a nerve impulse occurs only along

Correct AnswerverifiedShow Answer

Which part of the neuron contains the nucleus?

Correct AnswerverifiedShow Answer

The electrochemical gradient refers to

Correct AnswerverifiedShow Answer

Imagine a genetic mutation that resulted in a malfunctioning inactivation gate in a voltage-gated sodium channel. The defective gate wouldn't always open and close when it should. What functional problems would this cause for the neurons?

Correct AnswerverifiedNeurons' axons would not fire action pot...View AnswerShow Answer

Typically, a multipolar neuron has many dendrites and one axon extending from the cell body.

Correct AnswerverifiedShow Answer

The monoamine that has functions related to sleep, appetite, cognition, and mood is

Correct AnswerverifiedShow Answer

Along an axon, the gaps between neurolemmocytes are called neurofibril ________.

Correct AnswerverifiedShow Answer

Spinal nerves extend from the spinal cord, whereas ________ nerves extend from the brain.

Correct AnswerverifiedShow Answer

After an impulse, the ________ refractory period is the time when it is possible to initiate another impulse, but it requires a stronger than usual stimulus.

Correct AnswerverifiedShow Answer

Anterograde transport is the movement of materials from synaptic knobs to the cell body.

Correct AnswerverifiedShow Answer

The portion of the nervous system that conducts impulses from the skin, joints, skeletal muscles, and special senses is the ________ division.

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
Neurons' axons would not fire action pot...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified