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TS PSC Group 1 Services Prelims 2017 Paper

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Question : 10

Total: 200

Which of the following is correct?
The term systole refers to
I. Phase of contraction of lungs.
II. Phase of relaxation of lungs.
III. Phase of relaxation of heart.
IV. Phase of contraction of heart.

I and II only
II and III only
II only
IV only

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