If you use images and/or text that are not your own words, you need to cite the sources.

@SanjuktaGhosh please add citations to your answer on where the image and quote originated. I'll keep this in mind next time I encounter an octopus! already exists. Answers.com ® Categories Animal Life Mollusks Cephalopods Octopus What do snails octopuses and mussels breathe with lungs or gills? Humans have the pulmonary artery arising from our heart, which takes deoxygenated blood to the lungs to get oxygenated. Already have an account with us? @RobertHarvey Isn't the poison of Octopus injected through a bite? Sign up to our newsletters Sign up to our newsletters The reason for this impressive cardiac hardware probably comes down to the unusual composition of their blood.Unlike vertebrates that have iron-rich haemoglobin packed into red blood cells, octopuses – along with some tarantulas, scorpions and horseshoe crabs – have copper-rich haemocyanin dissolved directly in their blood (this means their blood is blue! What do snails octopuses and mussels breathe with lungs or gills? Article originally published on May 2, 2002. The pulmonary vein brings oxygen-rich blood back to the heart for distribution. Look out for your Lunchtime Genius newsletter in your inbox soon. It only takes a minute to sign up.Octopuses are cephalopods, which have separate anal and oral openings. The reason cephalopods take the three-heart route, rather than the direct route, might have to do with their blood. ).Haemocyanin is less efficient than haemoglobin as an oxygen transporter. SAVE CANCEL.

... i know that snails have gills i am not sure about the others

I'll keep this in mind next time I encounter an octopus!I would imagine that you'd probably have to worry more about that poison gland than the highly-diluted waste that is ejected from the siphon. The smallest species measure only a few inches, while the largest, the giant Pacific octopus, can be 14 feet long. Stack Exchange network consists of 177 Q&A communities including

$\endgroup$ – Robert Harvey Aug 16 '16 at 21:22 Swim bladders are evolutionarily closely related (i.e., homologous) to lungs.Traditional wisdom has long held that the first lungs, simple sacs connected to the gut that allowed the organism to gulp air under oxygen-poor conditions, evolved into the lungs of today's terrestrial vertebrates and some fish (e.g., lungfish, gar, and bichir) and into the swim bladders of the ray-finned fish.

Unfortunately, those results are flooded with unrelated hits (apparently the octopus is a popular motif for tattoos... in a Siphon is a tube that leads from the mantle to the outside. Octopuses use their siphon to force water out in jets for propulsion and to flush waste products from the anus.To subscribe to this RSS feed, copy and paste this URL into your RSS reader.

The reason for this impressive cardiac hardware probably comes down to the unusual composition of their blood.

Would you like to merge this question into it? Indeed, However, I am very confused about how this applies to the octopus.

yes whales do have lungs, they are warm blooded mammals like us, the lungs are positioned just below the blowhole their lungs look similar to ours as well but the major difference is that it is on the horizontal not their vertical like us *Courtney* marine biologist in training

I don't think I've ever seen the anus depicted - where is it? By using our site, you acknowledge that you have read and understand our Biology Stack Exchange is a question and answer site for biology researchers, academics, and students.

PLUS a free mini-magazine for you to download and keep. Thanks!

In addition, because the lungs do not serve as a source of oxygen at depth, deep divers rely on enhanced oxygen stores in their blood and muscle. By clicking “sign up” you are agreeing to our What does it look like? As if these tentacled wonders weren’t already alien enough, the octopus' three hearts and blue copper-rich blood seals the deal.Octopuses have three hearts: one pumps blood around the body; the other two pump blood to the gills. Octopuses have three hearts: one pumps blood around the body; the other two pump blood to the gills. Does anything much come out?My first instinct would be to simply do a google image search for this. Our daily newsletter arrives just in time for lunch, offering up the day's biggest science news, our latest features, amazing Q&As and insightful interviews. The three hearts help to compensate for this by pumping blood at higher pressure around the body to supply the octopuses’ active lifestyle.Discover our latest special editions covering a range of fascinating topics from the latest scientific discoveries to the big ideas explained.Listen to some of the brightest names in science and technology talk about the ideas and breakthroughs shaping our world. $\endgroup$ – Superbest Aug 16 '16 at 20:57 5 $\begingroup$ I would imagine that you'd probably have to worry more about that poison gland than the highly-diluted waste that is ejected from the siphon. Sign in to manage your newsletter preferences

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