Cardiac muscle fibers need outside nervous stimulation in order to contract.
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Q12: Sarcoplasm is
A)smooth endoplasmic reticulum that stores calcium.
B)the
Q13: The extensions of the sarcolemma that carry
Q14: The smooth ER that stores calcium ions
Q15: Which type(s)of muscle tissue is/are striated?
A)Cardiac
B)Skeletal
C)Smooth
D)Both cardiac
Q16: Which type(s)of muscle tissue is/are involuntary?
A)Cardiac
B)Skeletal
C)Smooth
D)Both cardiac
Q18: Which type(s)of muscle tissue has/have intercalated disks?
A)Cardiac
B)Skeletal
C)Smooth
D)Both
Q19: A bundle of muscle fibers is called
Q20: Myofibrils are bundles of
A)muscle fibers.
B)sarcoplasmic reticuli.
C)muscles.
D)myofilaments.
Q21: Which of the following proteins is NOT
Q22: The I band is dark and split
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