Assertion: spider's muscle | /r/CapableOf | extend leg
Facets:
value: back out
type: MANNER
Source sentences:
text: The muscles in a tarantula's legs cause the legs to bend at the joints, but to extend a leg, the tarantula increases the pressure of haemolymph entering the leg.
text: Muscles attached on the inside of the exoskeleton contract to move the legs inward, but spiders don't have any muscles to extend the legs back out again.