Multiple Choice
Which of the following best describes the proximal attachment (origin) of the biceps brachii muscle?
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Mark the following statements as true for smooth muscle tissue, cardiac muscle tissue, and/or skeletal muscle tissue.
a. _________ Actin attaches to dense bodies.
b. _________ Cells are joined by intercalated discs.
c. _________ The thick and thin filaments are arranged into sarcomeres.
d. _________ The thick filaments contain myosin heads along their entire length.
e. _________ The cells depolarize and contract as a unit.
f. _________ Ca2+ binding to troponin is the initiating event of contraction.
g. _________ Ca2+ binding to calmodulin is the initiating event of contraction.
h. _________ The sarcolemma has a distinct motor end plate.