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Digestive System
The Cephalopod digestive system is a two opening system, with a mouth and anus. Octopuses and squids have three ways in which they can gain access and digest their food. They can either pull the shell apart with the suckers, bite the shell open with their beak, or they can drill through the shell. When they drill open the shell, the octopus then secretes a toxin that paralyzes the prey and begins to dissolve the connective tissue. The octopus may use radula, a toothed tongue, to help rasp away flesh from the prey. They digest the prey in the stomach and in digestive sac, all extra cellular. Typical preys of cephalopods are crabs, lobsters, and shrimp. The nautilus uses sixty to ninety suckerless tentacles to capture crabs and fish.
The Cephalopod digestive system is a two opening system, with a mouth and anus. Octopuses and squids have three ways in which they can gain access and digest their food. They can either pull the shell apart with the suckers, bite the shell open with their beak, or they can drill through the shell. When they drill open the shell, the octopus then secretes a toxin that paralyzes the prey and begins to dissolve the connective tissue. The octopus may use radula, a toothed tongue, to help rasp away flesh from the prey. They digest the prey in the stomach and in digestive sac, all extra cellular. Typical preys of cephalopods are crabs, lobsters, and shrimp. The nautilus uses sixty to ninety suckerless tentacles to capture crabs and fish.
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What Dumbo Octopuses eat:
The Dumbo Octopus eats worms, crustaceans and bivalves of the sea. A cool fact
about a Dumbo Octopus is that it does not chew its food and it has no teeth. The
Dumbo Octopus catches its prey by wrapping its tentacles around its prey and
strangling it. Then the Octopus swallows it whole.
The Dumbo Octopus eats worms, crustaceans and bivalves of the sea. A cool fact
about a Dumbo Octopus is that it does not chew its food and it has no teeth. The
Dumbo Octopus catches its prey by wrapping its tentacles around its prey and
strangling it. Then the Octopus swallows it whole.
![Picture](/uploads/2/3/7/3/23735607/7554829.jpg)
How does it obtain food?
They get their food by searching the sea floor and then floats over the prey and pounces at it to capture it for its meal.
They get their food by searching the sea floor and then floats over the prey and pounces at it to capture it for its meal.
Nervous System
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The donut-shaped brain of the octopus contains only part of its complex nervous
system: at least two-thirds of an octopus’s neurons are actually located in the
nerve cords of its arms. The arms themselves are boneless and highly flexible
appendages which appear to have three excitatory neuronal inputs with fairly
large synaptic input values.
Octopuses have no bone structure being
invertebrates but do have a skull, a shell rudiment and a beak. Despite having
no skeletal structure they are very strong and extremely
flexible.
Octopuses have three hearts - one that pumps blue blood
throughout their extensive vascular system similar to other molluscs, and two
branchial hearts which pump blood to the gills for oxygenation.
Eyes so very like human ones and yet radically more elegant in design. In
a celebrated poem Ogden Nash begs the octopus to tell him if its limbs are arms
or legs. Textbooks have a no-nonsense answer: they are arms, not legs (and
emphatically not tentacles). But super tongues would be at least as good. Each
octopus arm is a muscular hydrostat, like a human tongue, and each of the tens
or hundreds of suckers on it is lined with tens of thousands of
chemoreceptors—taste buds to you and me—and a comparable number of nerve endings
that provide an exquisite sense of touch.
system: at least two-thirds of an octopus’s neurons are actually located in the
nerve cords of its arms. The arms themselves are boneless and highly flexible
appendages which appear to have three excitatory neuronal inputs with fairly
large synaptic input values.
Octopuses have no bone structure being
invertebrates but do have a skull, a shell rudiment and a beak. Despite having
no skeletal structure they are very strong and extremely
flexible.
Octopuses have three hearts - one that pumps blue blood
throughout their extensive vascular system similar to other molluscs, and two
branchial hearts which pump blood to the gills for oxygenation.
Eyes so very like human ones and yet radically more elegant in design. In
a celebrated poem Ogden Nash begs the octopus to tell him if its limbs are arms
or legs. Textbooks have a no-nonsense answer: they are arms, not legs (and
emphatically not tentacles). But super tongues would be at least as good. Each
octopus arm is a muscular hydrostat, like a human tongue, and each of the tens
or hundreds of suckers on it is lined with tens of thousands of
chemoreceptors—taste buds to you and me—and a comparable number of nerve endings
that provide an exquisite sense of touch.