Answer 1:
Snakes have muscles that move them in various
curved ways like S's and C's and other curves.
When I was digging in my garden last week, I cut
the tale of a lizard. The lizard got away, but
the tail stayed there, wiggling and wiggling is
S-like curves for maybe 5 minutes. One thing
that surprised me was that the tail was trying
to move forward only - not backward - even
though the lizard and its brain were gone. The
tail kept wiggling, in the forward direction,
out of my hand. I wonder if snakes and lizards
can move backwards. Or maybe the lizard tail
was trying to move forward, and the tail was
still following those nerve impulses after it
was cut off.
As the tail wiggled, 4 pink muscle bundles
moved a bit out of the cut end. They looked
like they were in a square, around something in
the center, but the tail was very round.
At the end, the tail wiggled slower and
slower. That's because it was using up its
chemical energy. It needed chemical energy to
move, and it wasn't getting sugars and other
food molecules to make more chemical energy,
after it was cut off. Most chemical energy in
animals is called 'ATP.'
Keep asking questions! Best wishes,
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