I see we've once again moved into the time of year when Usenet posters
attempt to get others to do their homework for them.

 -- David Wright :: alphabeta at prodigy.net
    These are my opinions only, but they're almost always correct.
    "If you can't say something nice, then sit next to me."
                                -- Alice Roosevelt Longworth

The other reason nobody wants to answer this because you really need
images to understand ranges of motion.  They're very difficult concepts
to explain verbally.

If the explanation below doesn't answer your questions, (for example)
google "knee flexion" and hit "images" then "search."  You'll get lots
of images of knee flexion.

Generally flexion is bending a joint and extension is (duh) extending
the limb.  When you flex your elbow, you bring your wrist close to your
shoulder, and when you extend your arm at the elbow, you straighten
your arm.  Hyperextension is range of motion beyond full extension
(e.g. to 180 degrees at the knee or elbow).  You can only hyperextend
your elbow or knee if you're double-jointed or if you've injured your
elbow in some way.  You can internally rotate your hip with your knee
flexed or extended.  If your knee is flexed, you bring your knee across
the midline of your body.  If your knee is extended, you just point
your toe toward the other foot.  When you ABDUCT any bodily structure,
you TAKE IT AWAY.  Get it?  Just like when a person is abducted,
they're taken away.  Adduction is the reverse, or taking the limb
toward the body.  "Dorsum" usually means the back, but in the case of
the foot it means the top.  If you dorsiflex your ankle, aka flex your
ankle toward the dorsum of your foot, you're pointing your toe toward
your head.  If you plantarflex your ankle, you're pointing your toe
like a ballerina.

Oh sorry -- I misunderstood the question.  What answers did you come
up with?