Muscle Structure & Function
Authored by Lisa Lutchka
Science
10th - 12th Grade
Used 6+ times
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45 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the name of the thick myofilaments of a muscle fiber?
Actin
Myosin
Myoglobin
Troponin
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the name of the thin myofilaments of a muscle fiber?
Actin
Myosin
Myoglobin
Tropomyosin
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Number 3 represents which of the following events
action potential reaching the axon terminal
sodium rushing into the muscle fiber
potassium leaving the muscle fiber
a neurotransmitter crossing the synaptic cleft
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The shortening of a muscle is caused by
shortening of thick myofilaments
shortening of thin myofilaments
sliding of thin myofilaments past thick myofilaments
"accordian-like" folding of thick and thin myofilaments
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The actin is represented by the letter
A
B
C
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Skeletal muscle contraction is initiated when the ________ sends a message to the muscle cell.
muscle cell
neuron (nerve cell)
gland
none of the above
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The region where a motor neuron comes in close contact with a muscle cell.
neurotransmitter
muscular dystrophy
muscle tension
neuromuscular junction
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