Heart Contraction and Blood Flow心臟收縮和血液循環
2:43
Added: 3 years ago
From: donhg
Views: 13,420
Sort by time | Sort by thread (beta)

Link to this comment:

Share to:

All Comments (3)

Sign In or Sign Up now to post a comment!

  • The very BEST video explaining this ever. Saved me hours of time. Thanks a billion.

    sifisto 1 year ago

  • best explanation ever. it will be helpful for my pdbio class.

    usuariomacbook 1 year ago

  • Very nice (although in the first part there is considerable racket in the background).

    gewinnste 2 years ago

Loading...
Alert icon
0 / 00Unsaved Playlist Return to active list
    1. Your queue is empty. Add videos to your queue using this button:
      or sign in to load a different list.
    Loading...Loading...Saving...
    • Clear all videos from this list
    • Learn more