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The ________ functions in regulation of Ca2+ levels.
Sarcoplasmic Reticulum
Sarcomere
Troponin and tropomyosin
Actin filaments only
Actin
Muscle fiber
Myosin
Communication
Fill-in-the-blank! Muscle, Fascicle, _____, Myofibril
Sarcoplasmic Reticulum
Sarcomere
Troponin and tropomyosin
Actin filaments only
Actin
Muscle fiber
Myosin
Communication
___ and ___ are regulatory proteins bound to actin.
Sarcoplasmic Reticulum
Sarcomere
Troponin and tropomyosin
Actin filaments only
Actin
Muscle fiber
Myosin
Communication
Which of the following is NOT a function of the muscular system?
Sarcoplasmic Reticulum
Sarcomere
Troponin and tropomyosin
Actin filaments only
Actin
Muscle fiber
Myosin
Communication
The thin filament is composed of:
Sarcoplasmic Reticulum
Sarcomere
Troponin and tropomyosin
Actin filaments only
Actin
Muscle fiber
Myosin
Communication
The Light I Band consists of...
Sarcoplasmic Reticulum
Sarcomere
Troponin and tropomyosin
Actin filaments only
Actin
Muscle fiber
Myosin
Communication
The thick filament is composed of:
Sarcoplasmic Reticulum
Sarcomere
Troponin and tropomyosin
Actin filaments only
Actin
Muscle fiber
Myosin
Communication
The functional unit of the muscle cell is the:
Sarcoplasmic Reticulum
Sarcomere
Troponin and tropomyosin
Actin filaments only
Actin
Muscle fiber
Myosin
Communication
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