Anatomy & Physiology Worksheet With Answers Page 12
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22Station F:
Skeletal Muscle Structure
51. Name the functional unit
of the muscle labeled A.
Sacromere
52. What main protein is in the thick
filaments labeled B? (actin or myosin)
myosin
53. What main protein is in the
thin filaments labeled C?
actin
54. What happens to the area labeled D
when the muscle contracts?
Bigger or smaller
smaller
55 Which filaments (B or C) move in
ratchet-like motion as the muscle contracts?
C
Movement
56. What bone is labeled B?
radius
57. What bone is labeled C?
ulna
58. What muscle is labeled A?
biceps
59. What muscle is labeled F?
triceps
60. Which muscle (A or F) is
contracted in this diagram ?
A
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