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Question
- Identify Figures A and B.
- Label X, Y and Z.
- Which acts as an impulse booster?
- Which is under voluntary control?
Short Answer
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Solution
- A - cardiac muscle fibres; B - skeletal (striated) muscle fibres.
- X - intercalated disc; Y - light band; Z - dark band.
- The intercalated disc acts as an impulse booster.
- Skeletal (striated) muscle is under voluntary control.
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