Posted: 2/24/2012 3:47:42 PM EDT
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I was just thinking about this, on land its pretty simple the stomach is a big sack full of Acid.
However for fish underwater I wonder how they keep the stomach acid from being constantly diluted by all the water, and in Saltwater the PH is usually at least 8 so you would think that the stomach acid would be neutralized. |
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Dilution has minimal effect on pH. Fish exclude water from what they swallow, look at goldfish in an aquarium and notice they expel fragments of food when they swallow. Stomach acid is constantly generated by use of ATP (adenosine triphosphate, basic energy carrier in the cells) to split sodium chloride into sodium bicarbonate and hydrochloric acid. This is an endothermic reaction meaning it requires energy to be performed, unlike combustion which is exothermic or gives off energy. The bicarb goes to the small intestine for neutralization after pepsin enzymes unzip proteins into their constituent amino acids. |
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Valves Question Do fish Drink (this is a trick question) No. Not thru the mouth. Osmosis FTMFW. Depends on the fish Water moves from Less salty to more salty FW fish don't drink, SW fish Do. There are FRESWATER fish? (says the guy who lives at the beach) 
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I worked on a fishing boat in alaska.
When we processed cod, we sawed off their gigantic heads. Reached inside and pulled out their roe or milt (eggs or sperm), got the liver, and finally the stomach. The stomach looked like a small white leathery deflated balloon, or even like a condom. Unless it was full. We'd rip out the stomach, and flip in inside out, emptying the contents. A lot of the time, we'd find partially digested, perfectly severed mackerel heads in there. Sometimes the mackerel heads were quite nasty and almost dissolved. Sometimes they were feesh as the day they were cut. Can you guess where the mackerel heads came from? Anyway, all that stuff went to japan and korea. They eat it all! I'm not sure I can answer "how they work", but I did get to see them up close and personal. From tiny lil empty things, to stretched full of mackerel heads. It will remain with me forever. Yuck. |
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Quoted: now my head hurtsDilution has minimal effect on pH. Fish exclude water from what they swallow, look at goldfish in an aquarium and notice they expel fragments of food when they swallow. Stomach acid is constantly generated by use of ATP (adenosine triphosphate, basic energy carrier in the cells) to split sodium chloride into sodium bicarbonate and hydrochloric acid. This is an endothermic reaction meaning it requires energy to be performed, unlike combustion which is exothermic or gives off energy. The bicarb goes to the small intestine for neutralization after pepsin enzymes unzip proteins into their constituent amino acids. |
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Dilution has minimal effect on pH. Fish exclude water from what they swallow, look at goldfish in an aquarium and notice they expel fragments of food when they swallow. Stomach acid is constantly generated by use of ATP (adenosine triphosphate, basic energy carrier in the cells) to split sodium chloride into sodium bicarbonate and hydrochloric acid. This is an endothermic reaction meaning it requires energy to be performed, unlike combustion which is exothermic or gives off energy. The bicarb goes to the small intestine for neutralization after pepsin enzymes unzip proteins into their constituent amino acids. Seriously how much do you read on the average? It's like we have our own Sheldon. 
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I'm slow.
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Dilution has minimal effect on pH. Fish exclude water from what they swallow, look at goldfish in an aquarium and notice they expel fragments of food when they swallow. Stomach acid is constantly generated by use of ATP (adenosine triphosphate, basic energy carrier in the cells) to split sodium chloride into sodium bicarbonate and hydrochloric acid. This is an endothermic reaction meaning it requires energy to be performed, unlike combustion which is exothermic or gives off energy. The bicarb goes to the small intestine for neutralization after pepsin enzymes unzip proteins into their constituent amino acids. I was just about to post that....... |
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I worked on a fishing boat in alaska. When we processed cod, we sawed off their gigantic heads. Reached inside and pulled out their roe or milt (eggs or sperm), got the liver, and finally the stomach. The stomach looked like a small white leathery deflated balloon, or even like a condom. Unless it was full. We'd rip out the stomach, and flip in inside out, emptying the contents. A lot of the time, we'd find partially digested, perfectly severed mackerel heads in there. Sometimes the mackerel heads were quite nasty and almost dissolved. Sometimes they were feesh as the day they were cut. Can you guess where the mackerel heads came from? Anyway, all that stuff went to japan and korea. They eat it all! I'm not sure I can answer "how they work", but I did get to see them up close and personal. From tiny lil empty things, to stretched full of mackerel heads. It will remain with me forever. Yuck. Is that what they make surimi out of? |
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Dilution has minimal effect on pH. Fish exclude water from what they swallow, look at goldfish in an aquarium and notice they expel fragments of food when they swallow. Stomach acid is constantly generated by use of ATP (adenosine triphosphate, basic energy carrier in the cells) to split sodium chloride into sodium bicarbonate and hydrochloric acid. This is an endothermic reaction meaning it requires energy to be performed, unlike combustion which is exothermic or gives off energy. The bicarb goes to the small intestine for neutralization after pepsin enzymes unzip proteins into their constituent amino acids. Seriously how much do you read on the average? It's like we have our own Sheldon. Sheldon don’t know shit next to Keith_J. |
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Re: surimi,
No, I don't think so. I was told they stuff the stomach with rice and fish and cook it, and eat it like a yummy burrito. Those stomachs were nasty. I would not try it. A box of cod stomachs: 
Sick story: one of the old guys on the boat said he fucks thsm (like a flesh light). I still don't know if he was serious. I hope not, but I have my doubts. The milt are huge wavy tubes of sperm. They fry those up and eat em, or put em in soup. 
Funny story: a guy was putting a large pan of milt into the top rack of the freezer. The boat rolled wildly and spilled the entire pan down the neck of his raingear. One of the only times I recall laughing on the boat. Roe sacks. These are fried (as in pic), or spread onto other food. 
We were supposed to rip these out and sort em into water roe, black roe, red roe. I cannot recall all ofthe different kinds. All i remember is not knowing what the hell was the difference in the beginning. But speed was everything. So I threw em into he laundry baskets and put em into pans to be froze. Another story: while sorting, a guy next to me dropped his rain gear and shit on the deck near the bilge pump, so he wouldnt fall behind in his work. That boat was a nightmare. |
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Quoted: Never thought about this, now I'm curious. Awaiting answers. http://i41.tinypic.com/2ekhxlv.jpg Food goes in, poop comes out. Seems pretty simple to me. |
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Dilution has minimal effect on pH. Fish exclude water from what they swallow, look at goldfish in an aquarium and notice they expel fragments of food when they swallow. Stomach acid is constantly generated by use of ATP (adenosine triphosphate, basic energy carrier in the cells) to split sodium chloride into sodium bicarbonate and hydrochloric acid. This is an endothermic reaction meaning it requires energy to be performed, unlike combustion which is exothermic or gives off energy. The bicarb goes to the small intestine for neutralization after pepsin enzymes unzip proteins into their constituent amino acids. Who invited Cliff Claven to the party? |
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Quoted: Quoted: Dilution has minimal effect on pH. Fish exclude water from what they swallow, look at goldfish in an aquarium and notice they expel fragments of food when they swallow. Stomach acid is constantly generated by use of ATP (adenosine triphosphate, basic energy carrier in the cells) to split sodium chloride into sodium bicarbonate and hydrochloric acid. This is an endothermic reaction meaning it requires energy to be performed, unlike combustion which is exothermic or gives off energy. The bicarb goes to the small intestine for neutralization after pepsin enzymes unzip proteins into their constituent amino acids. Who invited Cliff Claven to the party? I don't deliver mail. Nor am I a lard butt. My best friend isn't named Norm. |