For the most part, the organ systems between goldfish and humans are the same.
Both have nervous systems with a brain inside the skull at the head end of the body, connected to sensory and motor neurons, a spinal cord and other nerves.
Both have eyes, olfactory systems, and staticoacoustic senses linked via the same sets of cranial nerve bundles.
Both have digestive systems with esophagous, stomach, intestines, gall bladder, liver, etc.
Both have circulatory systems with red blood cells using hemoglobin to deliver oxygen-rich blood to tissues, and using the same circulatory system to deliver food energy to their tissues. The circulatory system in both is driven by the heart - although in humans it is a more complex, four-chambered jobbie.
Both have excretory systems that filter waste products through the kidneys to produce dilute urea-rich urine.
Both have internal bony skeletons that provide support for muscular attachment.
Both have endocrine systems that utilize hormones delivered to the bloodstream to regulate a variety of metabolic and growth activities.
The main differences have to do with the respiratory system, integument and appendicular skeleton/muscle system.
Goldfish extract the oxygen they need from water through gills. Humans don't do that (except as embryos), and instead breathe air through lungs modified from the swim bladder (used by the goldfish to regulate buoyancy).
Goldfish have mucous coated scales covering their body, while humans have touch-sensitive keratinized skin, covered in hairs.
The pectoral and pelvic girdles of goldfish are compressed into the 'chest' region, and consist primarily of four broad fins supported by thin fin-rays, while humans have four muscular limbs separated into pairs at each end of the spinal column, with lengthy medial segments that provide support, mobility and environmental manipulation abilities for a terrestrial lifestyle, before they are broken down into an array of smaller elements (fingers and toes) that provide greater manipulation and balance.
2007-03-01 08:27:28
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answer #1
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answered by Anonymous
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Biggest difference that comes to my mind is that a goldfish has gills instead of the lungs you would expect to find in a human.
Some remarkable similarities though (including ovaries and/or testes):
Both have brains, eyes and a digestive tract.
Here is a link to some graphic pictures of an autopsy of a dead goldfish. All the organs are labelled.
http://thegab.org/Articles/GoldfishInternalAnatomy.html
2007-03-01 08:30:15
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answer #2
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answered by BP 7
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Ive never seen a goldfish with testicles. Or Breasts. Or lungs. Or a cervix. Or a uterus.
2007-03-01 08:08:12
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answer #4
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answered by YDoncha_Blowme 6
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