help...thanks in advanced
2007-04-26 17:32:13 · 0 answers · asked by jeweledinpink0625 2 in Science & Mathematics ➔ Biology
Well, the actual purpose is to ensure circulation of haemolymph (white colour blood found in them) throughout the body. These organisms have a system known as open circulatory system, which means that there are no arteries, veins, or capillaries to transport blood. The organs are bathed in the haemolymph, and in order to transport it throughout the body of the organism, it requires a multichambered heart, which runs almost throughout the length of the organism.
2007-04-27 04:04:17 · answer #1 · answered by Vytheeshwaran V 4 · 3⤊ 0⤋
when I got my Crested I wanted a purebred. I knew what traits I wanted in a dog, and I also wanted the security in knowing that I was buying a dog that came from health tested parents. I had done research and decided that a Crested was the right breed.. there were not many Cresteds in rescue at the time either. Most were older dogs with health issues, or had requirements of a fenced yard. I will admit I was still abit bitter about adoption at the time too. We had adopted a puppy before from a "rescue" lady. The puppy was suppossed to be a small breed puppy. The rescue lady had contacted me thru a forum to adopt this puppy to me. When we took the pup to the vet, the vet estimated the pup to be 4-6 weeks old, no older. It ended up being over 40 pds when grown and had a terrible temperment. She was shy and fearful. We found out that the rescue lady pulls from a shelter and fosters for them, but she was NOT supposed to be adopting out the puppy yet.. it was suppossed to be fostered for several more weeks. We were looking for a small dog to keep on the rig with us, so this dog was not suitable for our needs, we ended up rehoming her with a more suitable home. It may have been different if we had a house and a yard and size wasnt so important. I wanted to know what I was getting, so I wanted a purebred dog. I dont share this story often because I dont want to put a negative idea towards shelter and rescue. There are many wonderful dogs in shelter and rescue that need homes, and my next dog will likely be an adopted dog... most likely an adult. Some people may just want to know what they are getting in terms of traits and qualities.. someone may be allergic and may need a particular breed.. or they want the assurance of a well-bred dog from healthy parents. ADDED I too agree that some of the shelter fees are abit of a turn off.. some rescues are getting down right insane. I think around $300 or less is reasonable for a fully vetted dog, but I have seen adoption fees of $400+ that did not even include all the vet care! IMO, I'd rather pay a few hundred more and get a dog that I know comes from a stable genetic background. I have to finish paying for shots and spay/neuter anyways. Even you average person sees those high adoption fees and thinks "I can find an AKC puppy in the newspaper for the same price/cheaper!"
2016-03-17 00:52:24 · answer #2 · answered by ? 4 · 0⤊ 1⤋
Do Worms Have Hearts
2016-10-01 10:14:11 · answer #3 · answered by giannini 4 · 0⤊ 0⤋
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What a great face. :o) All of the 20+ dogs Ive had (and 25+ foster dogs) have been strays, pound puppies or have come from a rescue. Ive had a couple of flakes, but the rest have been great dogs. Only one of my dogs had any medical issues. My old lab mix (a stray) visited the vet five times in her life - twice for vaccinations, once to be spayed, once to have a broken tooth pulled, and at the age of 14 to be put to sleep. Her history is typical of my dogs. None of my dogs have had any major behavior issues....either with me, or my children. I think its pretty easy to gauge temperament when meeting a dog, and I know there are some great dogs at our shelter - I would keep one of my current foster dogs, if I had room....I just love him. (A potential adopter is coming to see him tomorrow, and may want both of my foster dogs - I am hoping they will hit it off :o) Its too bad more people dont realize how great a shelter dog can be.....theres a lot of hidden treasure in those cages.
2016-04-03 23:51:41 · answer #4 · answered by Anonymous · 0⤊ 1⤋
Worms have multiple hearts for a number of reasons. One for example is like a natural defense against prediters. If a bird snagged a worm and only ate a piece of him, the worm could still survive. cool huh.
2007-04-26 17:36:59 · answer #5 · answered by stick_e_bun 2 · 2⤊ 0⤋
Actually, they have 5 pair or 10 aortic arches ("hearts").
They are very small pulsating structures along the dorsal blood vessel.
The purpose is to circulate blood around a closed circulatory system.
2007-04-26 17:41:30 · answer #6 · answered by ursaitaliano70 7 · 1⤊ 0⤋
worms hearts purpose
2016-01-31 08:12:51 · answer #7 · answered by Stacee 4 · 0⤊ 0⤋
they have little hairs to help and relax their body and helps them move .
2015-05-11 22:59:17 · answer #8 · answered by Lorena 1 · 0⤊ 0⤋