Spiders secrete silk proteins from glands within their abdomen;
silk extruded through tiny orifices in abdominal appendages,
and spinnerets at the posterior end of the spider’s abdomen
solidifies in air. The spider uses silk to build nests, to snare
insects, to weave sacks for eggs and spiderlings, to wrap food gift
packages during courtship, and to spin threads for sailing on the
winds. Spider silk is very strong and has been used as uniform,
tough threads in bombsights of airplanes. Most arachnids are
carnivorous predators that dine on liquids. A spider bites prey
and paralyzes it with poison from its chelicerae, predigests the
prey’s insides by extruding enzymes from the arachnid digestive
tract into the prey, and pumps in the liquid meal with the muscular
action of its stomach.
Spiders secrete silk proteins from glands within their abdomen;
silk extruded through tiny orifices in abdominal appendages,
and spinnerets at the posterior end of the spider’s abdomen
solidifies in air. The spider uses silk to build nests, to snare
insects, to weave sacks for eggs and spiderlings, to wrap food gift
packages during courtship, and to spin threads for sailing on the
winds. Spider silk is very strong and has been used as uniform,
tough threads in bombsights of airplanes. Most arachnids are
carnivorous predators that dine on liquids. A spider bites prey
and paralyzes it with poison from its chelicerae, predigests the
prey’s insides by extruding enzymes from the arachnid digestive
tract into the prey, and pumps in the liquid meal with the muscular
action of its stomach.
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Spiders secrete silk proteins from glands within their abdomen;
silk extruded through tiny orifices in abdominal appendages,
and spinnerets at the posterior end of the spider’s abdomen
solidifies in air. The spider uses silk to build nests, to snare
insects, to weave sacks for eggs and spiderlings, to wrap food gift
packages during courtship, and to spin threads for sailing on the
winds. Spider silk is very strong and has been used as uniform,
tough threads in bombsights of airplanes. Most arachnids are
carnivorous predators that dine on liquids. A spider bites prey
and paralyzes it with poison from its chelicerae, predigests the
prey’s insides by extruding enzymes from the arachnid digestive
tract into the prey, and pumps in the liquid meal with the muscular
action of its stomach.
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