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Neuromuscular Junction Case Study Question
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Chapter 9
Muscular System: Neuromuscular Junction
1.Where Calcium stores in each muscle cell? _________________________
2.Synaptic vesicles in the axon terminal of a motor neuron contain what neurotransmitter? _________________________
3.An action potential in the axon terminal of a motor neuron opens what type of ion channels? _________________________
4.By what means of membrane transport does the neurotransmitter leave the axon terminal? _________________________
5.Binding of neurotransmitter to the receptors on the motor end plate opens what type of ion channels? _________________________
6.Opening of these channels leads to _________________________ of the motor end plate.
7.How is the neurotransmitter removed from the synaptic cleft?
8.As a result of question 6, an action potential is propagated along the sarcolemma of the muscle cell and down the _________________________ into the cell.
9.The result of this action potential releases what ion from the terminal cisternae of the SR? _________________________
Muscular System: Sliding Filament Theory
1.a. The thick filament is composed of what molecule? _________________________
2.The myosin head contains binding sites for what two molecules?
1.
2.
3.Three molecules make up the thin filament.
4.What molecule must bind to the myosin head in order for it to disconnect with actin? _________________________
5.Breaking down of ATP or ___________of the ATP returns the myosin molecule to the high energy conformation.
6.Binding of the __________heads sequentially prevents backsliding of the thin filament.
7.Name three roles for ATP in the contraction of muscle.
8.What molecule is connected to the Z line? __________________________________
9.Which of the following shorten during contraction? (may be more than one)
Muscular System: Contraction of Motor Units
1.Define a motor neuron: _______________________________________________________________________________________________________________________________________________ _________
2.Define a motor unit: __________________________________________________________________________________________________________________________________________________________
3.The synapse between a motor neuron and the muscle it innervates is called a/an __________________________.
5.The muscles of the eye need to make precise small motor movements. Therefore, you would find________ (large or small) motor units in the eye.The muscles of the thigh exhibit gross movements for walking. Therefore, you would find_______ (large or small) motor units in the thigh.
6.a. How is muscle tone maintained in the muscle? ____________________________________________________________________________________________________________________
Muscular System: Contraction of Whole Muscle
1.Which of the following contract in an all-or-none fashion?
2.The development of tension in a muscle, in response to a stimulus above threshold, is called a/an _______________________________.
3.Identify the three phases of a muscle twitch from the following definitions:
4.a. Summation results from: _________________________________________________________________________________________________________________________________________
5.Below is a list related to summation. Put them in the correct order and describe each
stage.
Order | Stage | Description |
Fatigue | ||
Incomplete tetanus | ||
Treppe | ||
Complete tetanus |
6.In the Motor Unit related section, how many motor units (many or few) were required to lift the weights when:
RUBRIC |
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Excellent Quality 95-100%
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Introduction
45-41 points The background and significance of the problem and a clear statement of the research purpose is provided. The search history is mentioned. |
Literature Support 91-84 points The background and significance of the problem and a clear statement of the research purpose is provided. The search history is mentioned. |
Methodology 58-53 points Content is well-organized with headings for each slide and bulleted lists to group related material as needed. Use of font, color, graphics, effects, etc. to enhance readability and presentation content is excellent. Length requirements of 10 slides/pages or less is met. |
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Average Score 50-85% |
40-38 points More depth/detail for the background and significance is needed, or the research detail is not clear. No search history information is provided. |
83-76 points Review of relevant theoretical literature is evident, but there is little integration of studies into concepts related to problem. Review is partially focused and organized. Supporting and opposing research are included. Summary of information presented is included. Conclusion may not contain a biblical integration. |
52-49 points Content is somewhat organized, but no structure is apparent. The use of font, color, graphics, effects, etc. is occasionally detracting to the presentation content. Length requirements may not be met. |
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Poor Quality 0-45% |
37-1 points The background and/or significance are missing. No search history information is provided. |
75-1 points Review of relevant theoretical literature is evident, but there is no integration of studies into concepts related to problem. Review is partially focused and organized. Supporting and opposing research are not included in the summary of information presented. Conclusion does not contain a biblical integration. |
48-1 points There is no clear or logical organizational structure. No logical sequence is apparent. The use of font, color, graphics, effects etc. is often detracting to the presentation content. Length requirements may not be met |
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Neuromuscular Junction Case Study Question |
Neuromuscular Junction Case Study Question