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As a threshold stimulus is received by a muscle cell, calcium is released and the muscle cell will contract.

A) True
B) False

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What is the name of the structure labeled C? What is the name of the structure labeled C?   A)  Endomysium B)  Myofibril C)  Muscle fiber D)  Myofilament


A) Endomysium
B) Myofibril
C) Muscle fiber
D) Myofilament

E) C) and D)
F) B) and D)

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Which bone is indicated by the arrow? Which bone is indicated by the arrow?   A)  Clavicle B)  Scapula C)  Humerus D)  Radius


A) Clavicle
B) Scapula
C) Humerus
D) Radius

E) B) and D)
F) A) and C)

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Which of the following is a function of the skeletal and muscular systems as they work together?


A) Movement and locomotion
B) Protection of organs
C) Maintenance of upright posture
D) All of these

E) A) and B)
F) All of the above

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The inside of the shaft of a long bone is filled with:


A) spongy bone.
B) cartilage.
C) bone marrow.
D) synovial fluid.

E) B) and C)
F) B) and D)

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If you underestimate the weight of an object, you will have to recruit more ____________ in order to lift the object.

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While playing soccer, a player gets kicked in the shin. Which bone is likely affected?


A) Tibia
B) Femur
C) Fibula
D) Humerus

E) None of the above
F) C) and D)

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