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WorksheetsSkeletal Muscle Levels of Organization
Total questions: 15
Worksheet time: 7mins
What is shown in the colored part of this diagram?
a whole muscle
five muscle fibers
five muscle fascicles
five myofibrils
What is labeled "1" in the diagram?
sarcolemma
sarcoplasmic reticulum
transverse tubules
myofibril
What is labeled "2" (the yellow part) in the diagram?
sarcolemma
sarcoplasmic reticulum
transverse tubules
myofibril
What is labeled "4" (the blue/purple part) in the diagram?
sarcolemma
sarcoplasmic reticulum
transverse tubules
myofibril
Name the following in order from largest to smallest:
muscle, muscle fascicle, muscle cell, myofibril, filaments
muscle, muscle fascicle, muscle cell, filaments, myofibril
muscle, muscle cell, muscle fascicle, myofibril, filaments
muscle, muscle cell, muscle fascicle, filaments, myofibril
What happens in the transverse tubules of a muscle cell?
excess ATP is stored in the tubules
calcium ions are released into tubules' extracellular fluid
action potentials are conducted through the tubules to the inside of the cell
ATP is produced in the mitochondria found in the tubules
Which type of muscle tissue connects bones to other bones, allowing for movement of our joints?
cardiac
smooth
skeletal
sympathetic
Which type of muscle tissue is involuntary and found in places such as the stomach and intestines?
cardiac
smooth
skeletal
myofibrilic
What is labeled "6" in the diagram? These help convert oxygen and sugars into ATP for the muscle cell to use.
actin
sarcoplasmic reticulum
myosin
mitochondria
Which of the following is NOT a molecule?
ATP
fascicle
actin
myosin
Which of these is the smallest?
myofilament
myofibril
muscle fiber
fascicle
What do you call a single bundle of muscle cells?
muscle
fascicle
fiber
myofibril
Where are the calcium ions in a muscle fiber stored when the muscle isn't contracting?
mitochondria
myofibrils
T-tubules
sarcoplasmic reticulum
What is the length between Z-lines of an actin molecule called?
fascicle
sarcomere
myosin binding site
sarcoplasmic length
For a signal to get from a neuromuscular synapse to a T-tubule, it must travel along what?
sarcolemma
sarcoplasmic reticulum
myofibril
myofilament
