Exam (elaborations)
biology of behaviour multiple choice questions
biology of behaviour multiple choice questions Exam (elaborations) Psychology Psychology: Themes and Variations, ISBN: 6127
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Name: ______________________ Class: _________________ Date: _________ ID: AChapter 3 study test
Multiple Choice
Identify the choice that best completes the statement or answers the question.
____ 1. The cells of the nervous system that do the work of receiving, integrating, and transmitting
information are the
a. neurilemma
b. glia
c. neuroblasts
d. neurons
____ 2. Which of the following is NOT one of the main functions of neurons?
a. receiving information
b. generating information
c. transmitting information
d. integrating information
____ 3. The basic links that permit communication within the nervous system are the
a. glia
b. bones
c. muscles
d. neurons
____ 4. The basic parts of a neuron are
a. vesicles, terminal buttons, synapses
b. cell body, axon, dendrites
c. myelin, nodes, axon terminals
d. hindbrain, midbrain, forebrain
____ 5. Branches are to trees as ____ are to neurons.
a. axons
b. cell bodies
c. dendrites
d. nuclei
____ 6. The insulating material that encases some axons is referred to as the
a. soma
b. corpus callosum
c. myelin sheath
d. dendritic tree
____ 7. The cells that provide structural support and insulation for neurons are called
a. glia
b. somata
c. neuromodulators
d. dendrites
____ 8. Glia cells
a. release neuromodulators
b. provide structural support for neurons
c. release neurotransmitters
d. form the primary components of the spinal cord
1
,Name: ______________________ ID: A
____ 9. The difference in the flow rates of sodium and potassium ions across the cell membrane leads to
a. a slightly higher concentration of negatively charged ions inside the cell.
b. a negatively charged action potential.
c. a slightly lower concentration of negatively charged ions inside the cell.
d. both a negatively charged action potential and a slightly lower concentration of
negatively charged ions inside the cell.
____ 10. The tiny electrical charge that exists when a neuron is not receiving and/or sending information is
called
a. an action potential.
b. a synaptic gap.
c. a resting potential.
d. a post synaptic potential.
____ 11. The electrical charge that exists between the inside and the outside of a neuron when the neuron is
neither receiving nor sending is approximately
a. -1000 millivolts
b. +60 to +70 millivolts
c. -60 to -70 millivolts
d. +1000 millivolts
____ 12. Bradley is deeply relaxed and his muscles are not moving at all. This suggests that, for Bradley's
motor neurons
a. sodium ions are concentrated inside the neurons and potassium ions are
concentrated outside the neurons
b. sodium ions and potassium ions are both concentrated inside the neurons
c. sodium ions and potassium ions are both concentrated outside the neurons
d. sodium ions are concentrated outside the neurons and potassium ions are
concentrated inside the neurons
____ 13. When sodium channels open, allowing sodium ions to flow into a neuron, it causes
a. the likelihood of an action potential to decrease.
b. the axon hillock to become inactivated.
c. the likelihood of an action potential to increase.
d. the neuron to return to its resting potential.
____ 14. The firing of a neuron is most similar to:
a. a bowl overflowing as more water slowly drips into it.
b. the increase in sunlight as the sun rises.
c. a plane taking off or landing.
d. light coming on as a light switch is flipped.
____ 15. The electrical charge inside a neuron when it is in its resting state is approximately
a. +600 volts
b. +60 millivolts
c. -700 volts
d. -70 millivolts
____ 16. Neurotransmitters are secreted from the
a. myelin sheath
b. terminal buttons
c. neuromodulators
d. dendrites
2
, Name: ______________________ ID: A
____ 17. The space between a terminal button and a dendrite is referred to as the
a. midsynaptic potential range
b. transmission gap
c. neuromodulator
d. synaptic cleft
____ 18. An impulse moves from one neuron to another through the action of
a. neurotransmitters
b. hormones
c. action potentials
d. neuromodulators
____ 19. Which statement most accurately describes the process of synaptic transmission?
a. As depolarization progresses the firing threshold is reached and an action potential
occurs.
b. Synaptic vesicles secrete neurotransmitters which diffuse over to the receptor sites
on the dendrites of another neuron.
c. After firing potassium ions rush out of the neural membrane in a process called
repolarization.
d. The action potential jumps from one node to the next until it reaches the terminal
buttons.
____ 20. An electric potential that increases the likelihood that the postsynaptic neuron will fire is called an
a. all-or-none potential.
b. inhibitory postsynaptic potential.
c. excitatory postsynaptic potential.
d. excitatory presynaptic potential.
____ 21. If IPSP's did not exist
a. it would be "easier" for a neuron to fire its action potential.
b. it would be "harder" for a neuron to fire its action potential.
c. since the action potential happens according to the all-or-none principle there would
be no effect on the ease at which the neuron fired its action potential.
d. action potentials would not occur.
____ 22. Reabsorption of neurotransmitters into the presynaptic neuron is referred to as
a. cyclomyosis
b. regrading
c. uploading
d. reuptake
____ 23. Which of the following neurotransmitters is primarily involved in the activation of motor neurons
controlling skeletal muscles?
a. GABA
b. dopamine
c. serotonin
d. acetylcholine
____ 24. Jeremy is sitting quietly when the muscles in his left leg begin to "twitch." This activation of
movement in his voluntary muscles is most likely due to the release of the neurotransmitter
a. serotonin
b. dopamine
c. acetylcholine
d. norepinephrine
3
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