TEST 3-PRACTICE TEST
1. The peripheral nervous system can be divided into:
a. Somatic nervous system
b. Autonomic nervous system
c. Enteric nervous system
d. All of the above
e. None of the above
2. This has the property of electrical excitability.
a. Muscle cells
b. Neurons
c. Both A & B
d. B only
e. A, B, & one other cell type that is not listed.
3. This is the site of protein synthesis in a neuron.
a. Mitochondria
b. Nucleus
c. Nissl body
d. Dendrite
e. Axon
4. This type of neuron has one main dendrite and one main axon on opposite ends of the soma.
a. Multipolar neuron
b. Bipolar neuron
c. Unipolar neuron
d. Purkinje cell
e. Renshaw cell
5. This contains neuronal cell bodies, dendrites, unmyelinated axons, axon terminals and neruoglia.
a. Gray matter
b. White matter
c. Astrocytes
d. Satellite cells
e. Ependymal cells
6. Sodium pumps are considered electrogenic because
a. They contribute to the negativity of the resting membrane potential
b. Because the sodium ions are negatively charged
c. Because they exhibit low permeability
d. Both a and b
e. All of the above
7. When a depolarizing graded potential makes the membrane depolarize to threshold
a. Ligand gated Ca+ channels close rapidly
b. Voltage gated Cl- channels open rapidly
c. Ligand gated Na+ channels close rapidly
d. Voltage gated Na+ channels open rapidly
e. None of the above
, 8. During which period can a second action potential be initiated by a larger than normal stimulus?
a. Refractory period
b. Absolute refractory period
c. Relative refractory period
d. All of the above
e. None of the above
9. Saltatory conduction
a. Occurs through unmyelinated axons
b. Happens due to even distribution of voltage gated channels
c. Encode only action potentials in response to pain
d. Both a and b
e. None of the above
10. What phenomenon explains why a light touch feels different than a touch applied with more pressure?
a. Saltatory conduction
b. Continuous conduction
c. Frequency of impulses
d. Propagation
e. Refractory period
11. Faster communication and synchronization are two advantages of
a. Chemical synapsis
b. Electrical synapses
c. Ligand gated channels
d. Voltage gated channels
e. Mechanically gated channels
12. IPSP stands for:
a. Inhbitory presynaptic summation potential
b. Inhibitory postsynaptic summation potential
c. Inhibitory postsynaptic potential
d. Inhibitory presynaptic potential
e. None of the above
13. Where does summation occur?
a. In the synaptic cleft
b. In the dendrites
c. At the trigger zone
d. In the neuron nucleus
e. In the neuroplasm
14. This neural circuit consists of a single presynaptic neuron synapsing with several postsynaptic neurons.
a. Diverging circuit
b. Converging circuit
c. Reverberating circuit
d. Parallel after discharge circuit
e. Normal circuit
15. What factors limit neurogenesis in the Central Nervous system?
a. Neuroglia inhibition
b. Absence of growth factor
c. Lack of neurolemma
d. Rapid scar tissue formation
e. All of the above
1. The peripheral nervous system can be divided into:
a. Somatic nervous system
b. Autonomic nervous system
c. Enteric nervous system
d. All of the above
e. None of the above
2. This has the property of electrical excitability.
a. Muscle cells
b. Neurons
c. Both A & B
d. B only
e. A, B, & one other cell type that is not listed.
3. This is the site of protein synthesis in a neuron.
a. Mitochondria
b. Nucleus
c. Nissl body
d. Dendrite
e. Axon
4. This type of neuron has one main dendrite and one main axon on opposite ends of the soma.
a. Multipolar neuron
b. Bipolar neuron
c. Unipolar neuron
d. Purkinje cell
e. Renshaw cell
5. This contains neuronal cell bodies, dendrites, unmyelinated axons, axon terminals and neruoglia.
a. Gray matter
b. White matter
c. Astrocytes
d. Satellite cells
e. Ependymal cells
6. Sodium pumps are considered electrogenic because
a. They contribute to the negativity of the resting membrane potential
b. Because the sodium ions are negatively charged
c. Because they exhibit low permeability
d. Both a and b
e. All of the above
7. When a depolarizing graded potential makes the membrane depolarize to threshold
a. Ligand gated Ca+ channels close rapidly
b. Voltage gated Cl- channels open rapidly
c. Ligand gated Na+ channels close rapidly
d. Voltage gated Na+ channels open rapidly
e. None of the above
, 8. During which period can a second action potential be initiated by a larger than normal stimulus?
a. Refractory period
b. Absolute refractory period
c. Relative refractory period
d. All of the above
e. None of the above
9. Saltatory conduction
a. Occurs through unmyelinated axons
b. Happens due to even distribution of voltage gated channels
c. Encode only action potentials in response to pain
d. Both a and b
e. None of the above
10. What phenomenon explains why a light touch feels different than a touch applied with more pressure?
a. Saltatory conduction
b. Continuous conduction
c. Frequency of impulses
d. Propagation
e. Refractory period
11. Faster communication and synchronization are two advantages of
a. Chemical synapsis
b. Electrical synapses
c. Ligand gated channels
d. Voltage gated channels
e. Mechanically gated channels
12. IPSP stands for:
a. Inhbitory presynaptic summation potential
b. Inhibitory postsynaptic summation potential
c. Inhibitory postsynaptic potential
d. Inhibitory presynaptic potential
e. None of the above
13. Where does summation occur?
a. In the synaptic cleft
b. In the dendrites
c. At the trigger zone
d. In the neuron nucleus
e. In the neuroplasm
14. This neural circuit consists of a single presynaptic neuron synapsing with several postsynaptic neurons.
a. Diverging circuit
b. Converging circuit
c. Reverberating circuit
d. Parallel after discharge circuit
e. Normal circuit
15. What factors limit neurogenesis in the Central Nervous system?
a. Neuroglia inhibition
b. Absence of growth factor
c. Lack of neurolemma
d. Rapid scar tissue formation
e. All of the above
