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WorksheetsMicroscopic Anatomy of Skeletal Muscle
Total questions: 10
Worksheet time: 5mins
The I band within a skeletal muscle fiber is indicated by ________.
A
B
C
D
The A band within a myofibril is indicated by ________.
A
B
C
D
The H zone, located within the A band, lacks thin filaments and is represented by ________.
A
B
C
D
The myofilament composed of actin is indicated by ________.
A
B
C
D
What organelle wraps and surrounds the myofibril and stores calcium?
cross bridge
sarcoplasmic reticulum
sarcomere
sarcolemma
The plasma membrane of a skeletal muscle cell is called the ________.
sarcoplasm
sarcoplasmic reticulum
myofilament
sarcolemma
What creates the alternating light and dark bands that provides the striation pattern on skeletal muscle tissue?
Z discs and H zones
A bands and I bands
thick filaments and myosin heads
H zones and M lines
A sarcomere is ________.
the contractile unit between two Z discs
a compartment in a myofilament
the nonfunctional unit of skeletal muscle
the wavy lines on the cell, as seen in a microscope
Which one of the following is composed mostly of the protein myosin?
thick filaments
Z discs
thin filaments
light bands
TRUE or FALSE: The sarcoplasmic reticulum wraps like a sleeve around the myofibril and stores and releases calcium.
True
False
