exam 1 biod 152 questions and answers
This is a collection of cell bodies found in the peripheral nervous system. - correct answer Ganglia
This part of the autonomic system increases digestion - correct answer Parasympathetic
The ventral root of a nerve contains what type of neurons? - correct answer Motor (Efferent)
This part of a neuron conducts nerve impulses towards the cell body. - correct answer Dendrites
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 - correct answer F
The neuron pictured, below, is best described as: (picture 2)
Bipolar
Multipolar
Unipolar
Pseudounipolar - correct answer Multipolar
True or false: Neurons come into direct physical contact with one another. - correct answer False:
Neurons do not physically touch. They are separated by synapses.
, Describe the function and release of neurotransmitters. - correct answer Neurotransmitters are
chemicals stored inside secretory vesicles (axon terminal vesicles) at the end of the axon terminals.
When neurotransmitters are released by the axon terminal vesicles, they carry the transmission of the
nerve impulse from one neuron to another.
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 - correct answer A
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 - correct answer B
What is the location and function of Satellite cells? - correct answer 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? - correct answer No; Only peripheral system axons are capable of
regeneration. The spinal cord is in 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 (picture 1) - correct answer Afterpolarization
(Hyperpolarization) Potassium gates are slow to close and there is an undershoot of the potential.
The charge drops below -70mV and then returns to -70mV once at resting state again.
At rest, a neuron plasma membrane is:
A. -70 mV (polarized)
This is a collection of cell bodies found in the peripheral nervous system. - correct answer Ganglia
This part of the autonomic system increases digestion - correct answer Parasympathetic
The ventral root of a nerve contains what type of neurons? - correct answer Motor (Efferent)
This part of a neuron conducts nerve impulses towards the cell body. - correct answer Dendrites
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 - correct answer F
The neuron pictured, below, is best described as: (picture 2)
Bipolar
Multipolar
Unipolar
Pseudounipolar - correct answer Multipolar
True or false: Neurons come into direct physical contact with one another. - correct answer False:
Neurons do not physically touch. They are separated by synapses.
, Describe the function and release of neurotransmitters. - correct answer Neurotransmitters are
chemicals stored inside secretory vesicles (axon terminal vesicles) at the end of the axon terminals.
When neurotransmitters are released by the axon terminal vesicles, they carry the transmission of the
nerve impulse from one neuron to another.
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 - correct answer A
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 - correct answer B
What is the location and function of Satellite cells? - correct answer 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? - correct answer No; Only peripheral system axons are capable of
regeneration. The spinal cord is in 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 (picture 1) - correct answer Afterpolarization
(Hyperpolarization) Potassium gates are slow to close and there is an undershoot of the potential.
The charge drops below -70mV and then returns to -70mV once at resting state again.
At rest, a neuron plasma membrane is:
A. -70 mV (polarized)
