Topics: Musculoskeletal System Quiz
Which of the following statements about H zones and I bands is TRUE?
A. the H zones contain only actin, while the I bands contain only myosin
B. the H zones contain only myosin, while the I bands contain both actin and myosin
C. the H zones contain only myosin, while the I bands contain only actin
D. the H zones and the I bands each contain both actin and myosin
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Muscles that you have NO conscious control over, such as the muscles that line the digestive system, are classified as ___________.
A. voluntary
B. involuntary
C. skeletal
D. cardiac