6706920
Description
Quiz by Phillip McKelvey, updated more than 1 year ago
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Created by Phillip McKelvey
almost 8 years ago
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Question 1
Question
What proteins are found in a sarcomere?
Answer
-
Only Actin and Myosin
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Actin, Myosin, Troponin and Tropomyosin
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The Myofibril
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The Sarcoplasmic Reticulum
Question 2
Question
Myofibrils have light and dark bands called neuromuscular junctions.
Answer
- True
- False
Question 3
Question
The contractile elements of muscle fibres are called ________.
Answer
-
Sarcoplasm
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Myofibrils
-
The Sarcoplasmic Reticulum
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Fasciculi
Question 4
Question
The sliding filament theory of muscle contraction involves;
Answer
-
Calcium ions releasing ATP for energy
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Calcium ions binding with troponin, which shifts tropomyosin and allows the myosin-binding sites on actin to be exposed
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Neuromuscular junctions directly producing the movement of actin and myosin
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Actin filaments moving the myosin filaments in each sarcomere
Question 5
Question
The junction between a nerve and a muscle is called a_____________.
Answer
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Neuromuscular junction
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Synapse
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Sarcomere
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Neurotransmitter
Question 6
Question
A muscle contraction begins with release of _______, which reaches a sarcolemma, depolarizing the sarcolemma.
Answer
-
Calcium
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ATP
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Troponin
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Acetylcholine
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