How do you steam an artichoke in the mircowave?!

How do you steam an artichoke in the mircowave?

I tried to steam an artichoke in the microwave last night and it was only half cooked. I got it wet and put it in a glass pan, covered it with plastic wrap and put it in for 6 minutes. Should I have flipped it after 3 or something? I've steamed every vegetable you can think of this way and I've never had a problem.

Also, once I got down into the middle it was really spikey and fuzzy, like the inside to a flower. It wasn't mold or anything, it was definitely part of the artichoke. Is this normal or was it over/under ripe?

I found a great website for you. Here is how you do it:
First you must prepare the artichoke. Here is how it is done:
Start by washing the Artichoke under cold, running water.
Trim the end of the stem to desired length, such as 1 inch. Remember the stem is an extension of the Artichoke Heart and is edible!
Trim the top of the Artichoke by cutting off 1/4 of the top (about an inch) and discard.
Use scissors to trim rest of thorns off the top of each Artichoke petal – only if desired. (This is not necessary to have a great eating experience.)
To preserve the color, immediately rub any cut surface of the Artichoke with lemon juice to prevent browning caused by oxidation. (Optional)
Place Artichoke “stem up” in a deep, microwave-safe bowl.
Add 1-2 inches of water. Cover bowl with microwavable plate or with plastic wrap.
Jumbo sized Artichoke: Cook on high for 12-15 minutes.
Medium sized Artichoke: Cook on high for 7-10 minutes.
Depending on the size and quantity of Artichokes you are cooking, it may be necessary to heat an additional 1-5 minutes to obtain complete tenderness throughout the Artichoke, as microwave oven cooking times may vary. Keep covered and let the Artichoke stand for 5 minutes prior to serving.
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