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A bundle of muscle fibers forms a fascicle, surrounded by:

Which of the following does NOT change in length during muscle contraction?

Muscle Tissue

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Test your knowledge of muscle tissue!

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Questions 10

Answers

1
Which of the following does NOT change in length during muscle contraction?
A band
I band
Sarcomere
H zone
2
A bundle of muscle fibers forms a fascicle, surrounded by:
endomysium
ectomysium
perimysium
epimysium
3
During muscle contraction:
sarcomere lengthens and then shortens
sarcomere length stays the same
sarcomere lengthens
sarcomere shortens
4
The dark bands in a sarcomere organization is due to:
thick actin filaments
thin myosin filaments
thick myosin filaments
thin actin filaments
5
A motor unit is composed of:
1 motor neuron + 1 muscle cell
1 motor neuron + all muscle cells it contacts
1 muscle cell + all motor neurons it contacts
2 motor neurons + 1 muscle cell
6
Which of the following types of muscle tissue is considered voluntary and striated?
skeletal
smooth
cardiac
skeletal and cardiac
7
The smallest functional unit of muscle is known as:
sarcomere
muscle cell
muscle fiber
myofibril
8
Which is the correct order of muscle tissue components from smallest to largest?
myofilaments, myofibrils, muscle fibers, fascicles
myofilaments, muscle fibers, myofibrils, fascicles
muscle fibers, myofilaments, myofibrils, fascicles
myofibrils, myofilaments, muscle fibers, fascicles
9
At the neuromuscular junction, the neurotransmitter released from the neuron is called:
norepinephrine
dopamine
epinephrine
acetylcholine
10
Which of the following does not occur at the neuromuscular junction?
vesicles containing Ach fuse with the synaptic terminal
Na exits the muscle cell causing a muscle Action Potential
Ach binds to receptors on the muscle cell membrane
Calcium influx thru calcium channels in synaptic terminal