- Joined
- Nov 23, 2005
- Messages
- 2
I'm not in any way related to this field (at all) but have been browsing the site and have a question...
...the cephelapod arm... how does it move?
I'm guessing it's full of muscle, yeah, but if there's no internal or external skeleton for the muscle to attach to via a tendon then how is the muscle anchored? How does it flex with nothing to flex against.
I've just seen a blog post on another site that shows images of an octopus attacking and retrieving prey using it's arm with a 3-point bend (much the same as a wrist/elbow joint in a human arm) but i can't get a handle on the internal mechanism that allows muscle to contract and relax like this... surely muscled can't work in antagonistic pairs if there's no anchor...
...i'm confused... can someone enlighten me because i'm fascinated by the little fellas!
...the cephelapod arm... how does it move?
I'm guessing it's full of muscle, yeah, but if there's no internal or external skeleton for the muscle to attach to via a tendon then how is the muscle anchored? How does it flex with nothing to flex against.
I've just seen a blog post on another site that shows images of an octopus attacking and retrieving prey using it's arm with a 3-point bend (much the same as a wrist/elbow joint in a human arm) but i can't get a handle on the internal mechanism that allows muscle to contract and relax like this... surely muscled can't work in antagonistic pairs if there's no anchor...
...i'm confused... can someone enlighten me because i'm fascinated by the little fellas!