FINAL Exam BIOD 152
This is a bundle of axons found in the peripheral nervous system. Nerve
This part of the autonomic system increases digestion.
Parasympathetic
The dorsal root of a nerve contains what type of neurons? Sensory
(afferent)
This part of a neuron conducts nerve impulses away from the cell body. Axon
A neuron going to the bicep of the forearm is part of the:
A. central nervous system
B. peripheral nervous system
C. Autonomic system
D. Somatic system
E. A&C
F. B&D
F. B&D
The neuron pictured, below, is best described as:
A. Bipolar
B. Multipolar
C. Unipolar
D. Pseudounipolar
B. Multipolar
,True or false: Neurons do not physically touch one another.
True
Describe the synthesis and storage of neurotransmitters.
The neuron cell body manufactures neurotransmitters, which are stored in secretory
vesicles at the end of axon terminals
An efferent neuron carries information:
A. From the central to the peripheral nervous system
B. From the peripheral to the central nervous system
C. Within the central nervous system
D. Within the peripheral nervous system
A. From the central to the peripheral nervous system
A postsynaptic neuron would be found:
A. before the synapse
B. after the synapse
C. inside the synapse
D. Only in the central nervous system
B. after the synapse
What is the location and function of Satellite cells?
Location: peripheral nervous system (PNS)
Function: Regulation of environment of neuron cell bodies
A patient's spinal cord was severed in a car accident. Would the patient be expected to
regrow axons in their spinal cord? Why or why not?
No, only the peripheral system axons are capable of regeneration. The spinal cord is
the central nervous system
, Name and describe what is occurring in the neuron cell membrane in section 4 of the
diagram. Include the charge of the membrane during this phase.
This is phase 4: afterpolarization (hyperpolarization), the potassium gates are slow to
clse and that results in an undershoot of the potential, the voltage will drop below -70mV
and the return to the restign state beings.
At rest, a neuron plasma membrane is:
A. -70 mV
B. +40 mV
C. Hyperpolarized
D. Depolarized
A. -70 mV
Which zof zthe zfollowing zis zfalse zconcerning zthe zsodium-potassium zpump? z
A. it zmaintains zthe zresting zphase zof zan zaxon z
B. For zevery zthree zsodium zions zpumped zout, ztwo zpotassium zions zare zpumped zin z
C. it zmust zremain zin zconstant zoperation zto zmaintain zthe zresting zstate z
D. The zoverall zeffect zis za znegative zcharge zon zthe zoutside zof zthe zmembrane zD.
zThe zoverall zeffect zis za znegative zcharge zon zthe zoutside zof zthe zmembrane z
z
True zor zfalse: zA zsensory zneuron zis zsignaling zthe zbody zof zextreme zpain. zThis
zmeans zthat zthe zstrength zof zthe zaction zpotential zis zgreater zthan zusual. zExplain
zyour zreasoning zFalse, zthere zis zno zvariation zin zthe zstrength zof zaction zpotentials.
z(It zis zan zall-or-nothing zresponse). zThere zis zvariation zin zthe znumber zand
zfrequency zof zneurons zfiring z
z
Which zof zthe zfollowing zstatements zis zfalse zconcerning zthe zneuromuscular zjunction?
z
A. Sodium zions zrelease zfrom zthe zpresynaptic zmotor zneuron z
B. Calcium zions zrelease zfrom zthe zsarcoplasmic zreticulum zto zcause zmuscle
zcontraction z
C. Sodium zchannels zopen zon zthe zmuscle zfibers zin zresponse zto zthe
zneurotransmitter z
This is a bundle of axons found in the peripheral nervous system. Nerve
This part of the autonomic system increases digestion.
Parasympathetic
The dorsal root of a nerve contains what type of neurons? Sensory
(afferent)
This part of a neuron conducts nerve impulses away from the cell body. Axon
A neuron going to the bicep of the forearm is part of the:
A. central nervous system
B. peripheral nervous system
C. Autonomic system
D. Somatic system
E. A&C
F. B&D
F. B&D
The neuron pictured, below, is best described as:
A. Bipolar
B. Multipolar
C. Unipolar
D. Pseudounipolar
B. Multipolar
,True or false: Neurons do not physically touch one another.
True
Describe the synthesis and storage of neurotransmitters.
The neuron cell body manufactures neurotransmitters, which are stored in secretory
vesicles at the end of axon terminals
An efferent neuron carries information:
A. From the central to the peripheral nervous system
B. From the peripheral to the central nervous system
C. Within the central nervous system
D. Within the peripheral nervous system
A. From the central to the peripheral nervous system
A postsynaptic neuron would be found:
A. before the synapse
B. after the synapse
C. inside the synapse
D. Only in the central nervous system
B. after the synapse
What is the location and function of Satellite cells?
Location: peripheral nervous system (PNS)
Function: Regulation of environment of neuron cell bodies
A patient's spinal cord was severed in a car accident. Would the patient be expected to
regrow axons in their spinal cord? Why or why not?
No, only the peripheral system axons are capable of regeneration. The spinal cord is
the central nervous system
, Name and describe what is occurring in the neuron cell membrane in section 4 of the
diagram. Include the charge of the membrane during this phase.
This is phase 4: afterpolarization (hyperpolarization), the potassium gates are slow to
clse and that results in an undershoot of the potential, the voltage will drop below -70mV
and the return to the restign state beings.
At rest, a neuron plasma membrane is:
A. -70 mV
B. +40 mV
C. Hyperpolarized
D. Depolarized
A. -70 mV
Which zof zthe zfollowing zis zfalse zconcerning zthe zsodium-potassium zpump? z
A. it zmaintains zthe zresting zphase zof zan zaxon z
B. For zevery zthree zsodium zions zpumped zout, ztwo zpotassium zions zare zpumped zin z
C. it zmust zremain zin zconstant zoperation zto zmaintain zthe zresting zstate z
D. The zoverall zeffect zis za znegative zcharge zon zthe zoutside zof zthe zmembrane zD.
zThe zoverall zeffect zis za znegative zcharge zon zthe zoutside zof zthe zmembrane z
z
True zor zfalse: zA zsensory zneuron zis zsignaling zthe zbody zof zextreme zpain. zThis
zmeans zthat zthe zstrength zof zthe zaction zpotential zis zgreater zthan zusual. zExplain
zyour zreasoning zFalse, zthere zis zno zvariation zin zthe zstrength zof zaction zpotentials.
z(It zis zan zall-or-nothing zresponse). zThere zis zvariation zin zthe znumber zand
zfrequency zof zneurons zfiring z
z
Which zof zthe zfollowing zstatements zis zfalse zconcerning zthe zneuromuscular zjunction?
z
A. Sodium zions zrelease zfrom zthe zpresynaptic zmotor zneuron z
B. Calcium zions zrelease zfrom zthe zsarcoplasmic zreticulum zto zcause zmuscle
zcontraction z
C. Sodium zchannels zopen zon zthe zmuscle zfibers zin zresponse zto zthe
zneurotransmitter z
