Question 1

Match the glial cell with its function.
-Schwann cell

Accepted Answer

A) Influence function of blood-brain barrier 
B) Macrophages in CNS 
C) Produce cerebrospinal fluid 
D) Form myelin sheath around axons in CNS 
E) Form myelin sheath around part of the axon in the PNS 
A) Influence function of blood-brain barrier 
B) Macrophages in CNS 
C) Produce cerebrospinal fluid 
D) Form myelin sheath around axons in CNS 
E) Form myelin sheath around part of the axon in the PNS

Question 2

Which of the following statements concerning resting membrane potential is true?

Accepted Answer

A)  The resting plasma membrane is more permeable to Na+ than K+. 
B)  The resting membrane potential never reaches an equilibrium point. 
C)  The resting membrane potential is proportional to the tendency for K+ to diffuse out of the cell. 
D)  Negatively charged Cl− ions are attracted by negative charges in the cell. 
E)  The purpose of the sodium-potassium pump is to create an equilibrium of ion concentrations. 
A)  The resting plasma membrane is more permeable to Na+ than K+. 
B)  The resting membrane potential never reaches an equilibrium point. 
C)  The resting membrane potential is proportional to the tendency for K+ to diffuse out of the cell. 
D)  Negatively charged Cl− ions are attracted by negative charges in the cell. 
E)  The purpose of the sodium-potassium pump is to create an equilibrium of ion concentrations.

Question 3

Match the following concerning concentration differences across the plasma membrane.
-K+

Accepted Answer

A) Concentration of K+ 
B) Concentration of Na+ and Cl− 
C) Negatively charged proteins 
D) Sodium-potassium pump 
E) Plasma membrane is more permeable to this ion because of leak ion channels 
A) Concentration of K+ 
B) Concentration of Na+ and Cl− 
C) Negatively charged proteins 
D) Sodium-potassium pump 
E) Plasma membrane is more permeable to this ion because of leak ion channels

Question 4

Match the glial cell with its function.
-Astrocytes

Accepted Answer

A) Influence function of blood-brain barrier 
B) Macrophages in CNS 
C) Produce cerebrospinal fluid 
D) Form myelin sheath around axons in CNS 
E) Form myelin sheath around part of the axon in the PNS 
A) Influence function of blood-brain barrier 
B) Macrophages in CNS 
C) Produce cerebrospinal fluid 
D) Form myelin sheath around axons in CNS 
E) Form myelin sheath around part of the axon in the PNS

Question 5

-The figure illustrates changes in the membrane potential during an action potential. What does "C" represent?
A) Repolarization
B) Depolarization
C) Local potential
D) Threshold
E) Afterpotential

Accepted Answer

The answer of  
-The figure illustrates changes in the...

Question 6

When a neuron releases a neuromodulator that ________ the release of neurotransmitters from another neuron, this is called presynaptic facilitation.

Accepted Answer

A)  increases 
B)  decreases 
A)  increases 
B)  decreases

Question 7

Which of these does not contribute to the cessation of the signal in a synaptic transmission?

Accepted Answer

A)  Synaptic vesicles secrete neurotransmitter by exocytosis. 
B)  Neurotransmitter escapes from the synapse into the nearby extracellular fluid. 
C)  Neurotransmitters are no longer released. 
D)  The axon terminal reabsorbs some neurotransmitters by endocytosis. 
E)  Enzymes in the postsynaptic cell break down some neurotransmitters. 
A)  Synaptic vesicles secrete neurotransmitter by exocytosis. 
B)  Neurotransmitter escapes from the synapse into the nearby extracellular fluid. 
C)  Neurotransmitters are no longer released. 
D)  The axon terminal reabsorbs some neurotransmitters by endocytosis. 
E)  Enzymes in the postsynaptic cell break down some neurotransmitters.

Question 8

What type of neuroglial cells provide support and nutrition to sensory ganglia in the PNS?

Accepted Answer

A)  Schwann cells 
B)  Microglia 
C)  Ependymal cells 
D)  Satellite cells 
A)  Schwann cells 
B)  Microglia 
C)  Ependymal cells 
D)  Satellite cells

Question 9

The opening of more and more Na+ channels during depolarization

Accepted Answer

A)  is the result of the sodium-potassium exchange pump. 
B)  is an example of a positive feedback cycle. 
C)  is possible only if K+ channels remain closed. 
D)  is the cause of the afterpotential. 
E)  is an example of a negative feedback cycle. 
A)  is the result of the sodium-potassium exchange pump. 
B)  is an example of a positive feedback cycle. 
C)  is possible only if K+ channels remain closed. 
D)  is the cause of the afterpotential. 
E)  is an example of a negative feedback cycle.

Question 10

Cell bodies of the peripheral nervous system are located in

Accepted Answer

A)  ganglia. 
B)  Schwann cells. 
C)  the motor division. 
D)  the sensory division. 
E)  nerves. 
A)  ganglia. 
B)  Schwann cells. 
C)  the motor division. 
D)  the sensory division. 
E)  nerves.

Question 11

-The figure is a process figure of the chemical synapse. What does "E" represent?
A) Postsynaptic membrane
B) Synaptic cleft
C) Synaptic vesicle
D) Voltage-gated Ca2+ channel
E) Presynaptic terminal

Accepted Answer

Question 12

Rapid removal or destruction of neurotransmitter in the synaptic cleft

Accepted Answer

A)  may affect the ability of the postsynaptic membrane to generate action potentials. 
B)  generates local potentials in the presynaptic terminal. 
C)  is necessary for synaptic transmission. 
D)  may lead to action potentials. 
E)  may stop exocytosis. 
A)  may affect the ability of the postsynaptic membrane to generate action potentials. 
B)  generates local potentials in the presynaptic terminal. 
C)  is necessary for synaptic transmission. 
D)  may lead to action potentials. 
E)  may stop exocytosis.

Question 13

Protein synthesis in neurons occurs in ________.

Accepted Answer

A)  axons 
B)  dendrites 
C)  cell bodies or soma 
D)  presynaptic terminals 
E)  nodes of Ranvier 
A)  axons 
B)  dendrites 
C)  cell bodies or soma 
D)  presynaptic terminals 
E)  nodes of Ranvier

Question 14

Monamine oxidase inhibitors (MAO inhibitors)

Accepted Answer

A)  prevent synaptic transmission. 
B)  enhance the breakdown of norepinephrine. 
C)  enhance the binding of norepinephrine to its receptors. 
D)  prevent the release of norepinephrine by the presynaptic terminal. 
E)  have no effect on the action of norepinephrine. 
A)  prevent synaptic transmission. 
B)  enhance the breakdown of norepinephrine. 
C)  enhance the binding of norepinephrine to its receptors. 
D)  prevent the release of norepinephrine by the presynaptic terminal. 
E)  have no effect on the action of norepinephrine.

Question 15

Enkephalins produce presynaptic inhibition in neurons transmitting pain signals. Increased levels of enkephalins will

Accepted Answer

A)  increase awareness of pain. 
B)  decrease awareness of pain. 
C)  increase amount of pain. 
D)  decrease amount of pain. 
E)  have no effect on awareness or amount of pain. 
A)  increase awareness of pain. 
B)  decrease awareness of pain. 
C)  increase amount of pain. 
D)  decrease amount of pain. 
E)  have no effect on awareness or amount of pain.

Question 16

Neurons that have a single axon and a single dendrite are ________.

Accepted Answer

A)  tripolar 
B)  bipolar 
C)  multipolar 
D)  pseudo-unipolar 
A)  tripolar 
B)  bipolar 
C)  multipolar 
D)  pseudo-unipolar

Question 17

The nervous system has two subdivisions-the central nervous system and the ________ nervous system.

Accepted Answer

The answer of The nervous system has two subdivisions-the central...

Question 18

Which neurotransmitter is released at neuromuscular junctions?

Accepted Answer

A)  Serotonin 
B)  Acetylcholine 
C)  Dopamine 
D)  Glutamate 
A)  Serotonin 
B)  Acetylcholine 
C)  Dopamine 
D)  Glutamate

Question 19

Match the glial cell with its function.
-Ependymal cells

Accepted Answer

A) Influence function of blood-brain barrier 
B) Macrophages in CNS 
C) Produce cerebrospinal fluid 
D) Form myelin sheath around axons in CNS 
E) Form myelin sheath around part of the axon in the PNS 
A) Influence function of blood-brain barrier 
B) Macrophages in CNS 
C) Produce cerebrospinal fluid 
D) Form myelin sheath around axons in CNS 
E) Form myelin sheath around part of the axon in the PNS

Question 20

A change in the resting membrane potential has the following characteristics: non-propagated, graded, can summate. This type of change can

Accepted Answer

A)  be a local potential. 
B)  be an action potential. 
C)  be a consequence of an increase in the permeability to Na+. 
D)  result in repolarization. 
E)  be a local potential and a consequence of an increase in the permeability to Na+. 
A)  be a local potential. 
B)  be an action potential. 
C)  be a consequence of an increase in the permeability to Na+. 
D)  result in repolarization. 
E)  be a local potential and a consequence of an increase in the permeability to Na+.

Exam 11: Functional Organization of Nervous Tissue

Match the glial cell with its function. -Schwann cell

Which of the following statements concerning resting membrane potential is true?

Match the following concerning concentration differences across the plasma membrane. -K+

Match the glial cell with its function. -Astrocytes

-The figure illustrates changes in the membrane potential during an action potential. What does "C" represent? A) Repolarization B) Depolarization C) Local potential D) Threshold E) Afterpotential

When a neuron releases a neuromodulator that ________ the release of neurotransmitters from another neuron, this is called presynaptic facilitation.

Which of these does not contribute to the cessation of the signal in a synaptic transmission?

What type of neuroglial cells provide support and nutrition to sensory ganglia in the PNS?

The opening of more and more Na+ channels during depolarization

Cell bodies of the peripheral nervous system are located in

-The figure is a process figure of the chemical synapse. What does "E" represent? A) Postsynaptic membrane B) Synaptic cleft C) Synaptic vesicle D) Voltage-gated Ca2+ channel E) Presynaptic terminal

Rapid removal or destruction of neurotransmitter in the synaptic cleft

Protein synthesis in neurons occurs in ________.

Monamine oxidase inhibitors (MAO inhibitors)

Enkephalins produce presynaptic inhibition in neurons transmitting pain signals. Increased levels of enkephalins will

Neurons that have a single axon and a single dendrite are ________.

The nervous system has two subdivisions-the central nervous system and the ________ nervous system.

Which neurotransmitter is released at neuromuscular junctions?

Match the glial cell with its function. -Ependymal cells

A change in the resting membrane potential has the following characteristics: non-propagated, graded, can summate. This type of change can

The Human Organism

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Muscular System: Histology and Physiology

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Filters

Match the following concerning concentration differences across the plasma membrane. -K⁺

The opening of more and more Na⁺ channels during depolarization

-The figure is a process figure of the chemical synapse. What does "E" represent? A) Postsynaptic membrane B) Synaptic cleft C) Synaptic vesicle D) Voltage-gated Ca²⁺ channel E) Presynaptic terminal