Functional Organization of Nervous Tissue

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Introduction

FINAL ROUND

Cells Membrane Potential

Action Potential

Synapse

Introduction:

$100 Question

This is NOT a part of the peripheral nervous system:

a. cranial nerve

b. ganglion

c. spinal cord

d. spinal nerve

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ANSWER

Introduction:

$100 Answer

This is NOT a part of the peripheral nervous system:

a. cranial nerve

b. ganglion

c. spinal cord

d. spinal nerve

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Introduction:

$200 Question

This extensive network of axons is located outside of the CNS:

a. ganglion

b. plexus

c. sensory receptor

d. spinal cord

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ANSWER

Introduction:

$200 Answer

This extensive network of axons is located outside of the CNS:

a. ganglion

b. plexus

c. sensory receptor

d. spinal cord

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Introduction:

$300 Question

This portion of the motor division of the nervous system conducts action potentials from the central nervous system to skeletal muscle fibers.

a. afferent

b. autonomic

c. somatic

d. sympatheticBACK TO GAME

ANSWER

Introduction:

$300 Answer

This portion of the motor division of the nervous system conducts action potentials from the central nervous system to skeletal muscle fibers.

a. afferent

b. autonomic

c. somatic

d. sympathetic

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Introduction:

$400 Question

The cell bodies of sensory neurons are located in the dorsal root ganglion near the spinal cord.

True/False

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ANSWER

Introduction:

$400 Answer

The cell bodies of sensory neurons are located in the dorsal root ganglion near the spinal cord.

True/False

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Introduction:

$500 Question

__________ pairs of cranial nerves originate from the brain, and __________ pairs of spinal nerves originate from the spinal cord.

a. two, twelve

b. eight, twenty-four

c. twelve, thirty-one

d. fifteen, thirty-six

e. sixteen, thirty-eightBACK TO GAME

ANSWER

Introduction:

$500 Answer

__________ pairs of cranial nerves originate from the brain, and __________ pairs of spinal nerves originate from the spinal cord.

a. two, twelve

b. eight, twenty-four

c. twelve, thirty-one

d. fifteen, thirty-six

e. sixteen, thirty-eight BACK TO GAME

Cells:

$100 Question

These cells conduct action potentials from one neuron to another within the CNS:

a. sensory (afferent) neurons

b. motor (efferent) neurons

c. interneurons (association) neurons

d. bipolar neurons

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ANSWER

Cells:

$100 Answer

These cells conduct action potentials from one neuron to another within the CNS:

a. sensory (afferent) neurons

b. motor (efferent) neurons

c. interneurons (association) neurons

d. bipolar neurons

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Cells:

$200 Question

Axons terminate by branching to form small extensions with enlarged ends which are called this:

a. dendrites

b. neuron cell bodies

c. presynaptic terminals

d. postsynaptic membranes

e. axon hillocksBACK TO GAME

ANSWER

Cells:

$200 Answer

Axons terminate by branching to form small extensions with enlarged ends which are called this:

a. dendrites

b. neuron cell bodies

c. presynaptic terminals

d. postsynaptic membranes

e. axon hillocks BACK TO GAME

Cells:

$300 Question

These cell types produce and help circulate cerebrospinal fluid:

a. astrocytes

b. microglia

c. ependymal cells

d. Schwann cells

e. oligodendrocytesBACK TO GAME

ANSWER

Cells:

$300 Answer

These cell types produce and help circulate cerebrospinal fluid:

a. astrocytes

b. microglia

c. ependymal cells

d. Schwann cells

e. oligodendrocytes

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Cells:

$400 Question

These statements about unipolar neurons are all true except:

a. most are sensory neurons

b. have a single process extending from the cell body

c. located in the eye and nasal cavity

d. have no dendrites

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ANSWER

Cells:

$400 Answer

These statements about unipolar neurons are all true except:

a. most are sensory neurons

b. have a single process extending from the cell body

c. located in the eye and nasal cavity

d. have no dendrites

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Cells:

$500 Question

This statement best describes the myelin sheath:

a. made of Schwann cells(neurolemmocytes)

b. covering surrounding an axon

c. provides insulation from other axons

d. helps conduct the action potential more rapidly

e. all are true

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ANSWER

Cells:

$500 Answer

This statement best describes the myelin sheath:

a. made of Schwann cells (neurolemmocytes)

b. covering surrounding an axon

c. provides insulation from other axons

d. helps conduct the action potential more rapidly

e. all are trueBACK TO GAME

Membrane Potential:

$100 Question

Compared to the outside of the resting plasma membrane, the inside surface of the membrane is this:

a. positively charged

b. electrically neutral

c. negatively charged

d. continuously reversing so that it is positive one second and negative the next BACK TO GAME

ANSWER

Membrane Potential:

$100 Answer

Compared to the outside of the resting plasma membrane, the inside surface of the membrane is this:

a. positively charged

b. electrically neutral

c. negatively charged

d. continuously reversing so that it is positive one second and negative the next

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Membrane Potential:

$200 Question

Because of the sodium-potassium pump, there are:

a. more K+ outside the cell than inside and more Na+ inside the cell than outside

b. more K+ inside the cell than outside and Na+ outside the cell than inside

c. more K+ and Na inside the cell than outside

d. more K+ and Na outside the cell than inside

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ANSWER

Membrane Potential:

$200 Answer

Because of the sodium-potassium pump, there are:

a. more K+ outside the cell than inside and more Na+ inside the cell than outside

b. more K+ inside the cell than outside and Na+ outside the cell than inside

c. more K+ and Na inside the cell than outside

d. more K+ and Na outside the cell than insideBACK TO GAME

Membrane Potential:

$300 Question

The resting membrane potential results when the tendency for these ions to diffuse out of the cell is balanced by their attraction to opposite charges inside the cell:

a. Na+

b. K+

c. Cl-

d. negatively charged proteins

e. Ca2+BACK TO GAME

ANSWER

Membrane Potential:

$300 Answer

The resting membrane potential results when the tendency for these ions to diffuse out of the cell is balanced by their attraction to opposite charges inside the cell:

a. Na+

b. K+

c. Cl-

d. negatively charged proteins

e. Ca2+BACK TO GAME

Membrane Potential:

$400 Question

The resting membrane potential of nerve cells due to the electric charge difference across the plasma membranes is approximately -85mv.

True/False

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ANSWER

Membrane Potential:

$400 Answer

The resting membrane potential of nerve cells due to the electric charge difference across the plasma membranes is approximately -85mv.

True/False

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Membrane Potential:

$500 Question

Hyperpolarization, which is an increase in membrane potential, can be caused by this:

a. opening of Cl- gated channels

b. opening of Ca2+ gated channels

c. opening of Na+ gated channels

d. increase of extracellular K+

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ANSWER

Membrane Potential:

$500 Answer

Hyperpolarization, which is an increase in membrane potential, can be caused by this:

a. opening of Cl- gated channels

b. opening of Ca2+ gated channels

c. opening of Na+ gated channels

d. increase of extracellular K+

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Action Potential:

$100 Question

The following are characteristics of action potentials except:

a. all-or-none

b. caused by graded potentials reaching threshold

c. stimulus strength determines the magnitude

d. depolarization is followed by repolarization

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ANSWER

Action Potential:

$100 Answer

The following are characteristics of action potentials except:

a. all-or-none

b. caused by graded potentials reaching threshold

c. stimulus strength determines the magnitude

d. depolarization is followed by repolarization BACK TO GAME

Action Potential:

$200 Question

Depolarization occurs because more Na+ diffuse into the cell than K + diffuse out of it.

True/False

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ANSWER

Action Potential:

$200 Answer

Depolarization occurs because more Na+ diffuse into the cell than K + diffuse out of it.

True/False

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Action Potential:

$300 Question

This best describes the absolute refractory period:

a.limits how many action potentials can be produced during a given period of time

b.prevents an action potential from starting another action potential at the same point on the plasma membrane

c.is the period of time when a strong stimulus can initiate a second action potential.

d.both a and b.

e.all of the above BACK TO GAME

ANSWER

Action Potential:

$300 Answer

This best describes the absolute refractory period:

a.limits how many action potentials can be produced during a given period of time

b.prevents an action potential from starting another action potential at the same point on the plasma membrane

c.is the period of time when a strong stimulus can initiate a second action potential

d. both a and b

e. all of the above BACK TO GAME

Action Potential:

$400 Question

During saltatory conduction, action potentials jump from this:

a. one astrocyte to another

b. an axon to a dendrite

c. one internode to another

d. one node of Ranvier to another

e. one microglia cell to anotherBACK TO GAME

ANSWER

Action Potential:

$400 Answer

During saltatory conduction, action potentials jump from this:

a. one astrocyte to another

b. an axon to a dendrite

c. one internode to another

d. one node of Ranvier to another

e. one microglia cell to anotherBACK TO GAME

Action Potential: $500 Question

If the duration of the absolute refractory period of a nerve cell is 1millisecond (ms), this many action potentials are generated by a maximal stimulus in 1 second:

a. 1

b. 10

c. 100

d. 1000BACK TO GAME

ANSWER

Action Potential: $500 Answer

If the duration of the absolute refractory period of a nerve cell is 1millisecond (ms), this many action potentials are generated by a maximal stimulus in 1 second:

a. 1

b. 10

c. 100

d. 1000

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Synapse:

$100 Question

These are all part of a chemical synapse except:

a. presynaptic terminal

b. synaptic cleft

c. postsynaptic membrane

d. connexons

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ANSWER

Synapse:

$100 Answer

These are all part of a chemical synapse except:

a. presynaptic terminal

b. synaptic cleft

c. postsynaptic membrane

d. connexons

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Synapse:

$200 Question

Acetylcholinesterase, monoamine oxidase (MAO), and catechol-O-methyltransferase are this:

a. neurotransmitters

b. enzymes that break down neurotransmitters

c. enzymes that act as neuromodulators

d. enzymes that could produce an EPSP

e. substances that could produce an IPSP

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ANSWER

Synapse:

$200 Answer

Acetylcholinesterase, monoamine oxidase (MAO), and catechol-O-methyltransferase are this:

a. neurotransmitters

b. enzymes that break down neurotransmitters

c. enzymes that act as neuromodulators

d. enzymes that could produce an EPSP

e. substances that could produce an IPSP

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Synapse:

$300 Question

This characteristic can be produced by an IPSP:

a. local hyperpolarization

b. decreased excitability of neuron

c. increased permeability of postsynaptic membrane to K+ and Cl- ions

d. all of these

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ANSWER

Synapse:

$300 Answer

This characteristic can be produced by an IPSP:

a. local hyperpolarization

b. decreased excitability of neuron

c. increased permeability of postsynaptic membrane to K+ and Cl- ions

d. all of theseBACK TO GAME

Synapse:

$400 Question

When two action potentials arrive in very close succession at a single presynaptic terminal, this action occurs:

a. an IPSP is produced

b. the second action potential cancels the first

c. spatial summation occurs

d. temporal summation occursBACK TO GAME

ANSWER

Synapse:

$400 Answer

When two action potentials arrive in very close succession at a single presynaptic terminal, this action occurs:

a. an IPSP is produced

b. the second action potential cancels the first

c. spatial summation occurs

d. temporal summation occursBACK TO GAME

Synapse:

$500 Question

This combination represents a convergent pathway in the nervous system:

a. 1 presynaptic neuron synapses with 4 postsynaptic neurons

b. 1 presynaptic neuron synapses with 1 postsynaptic neuron

c. 3 presynaptic neurons synapse with 1 postsynaptic neuron

d. an afferent neuron synapses with an association neuron

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ANSWER

Synapse:

$500 Answer

This combination represents a convergent pathway in the nervous system:

a. 1 presynaptic neuron synapses with 4 postsynaptic neurons

b. 1 presynaptic neuron synapses with 1 postsynaptic neuron

c. 3 presynaptic neurons synapse with 1 postsynaptic neuron

d. an afferent neuron synapses with an association neuron BACK TO GAME

FINAL ROUND Question

This kind of nerve fiber would conduct action potentials the FASTEST:

a. unmyelinated nerve fibers

b. type A fibers

c. type B fibers

d. type C fibers

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ANSWER

FINAL ROUND Answer

This kind of nerve fiber would conduct action potentials the FASTEST:

a. unmyelinated nerve fibers

b. type A fibers

c. type B fibers

d. type C fibers

BACK TO GAME