Friday, July 31, 2015

Respiratory System Video

Hi Primary 5, We are back. Here some videos you may like about respiratory system.
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2 comments:

  1. UnknownAugust 5, 2015 at 6:20 AM

    I know that the biggest muscle is diaphragm
    Fikri

    ReplyDelete
    Replies
    1. sofyanaAugust 6, 2015 at 12:54 AM

      thanks for the comment. it contracts when we breath in.

      Delete

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