Fish anatomy is the study of the form or morphology of fish. It can be contrasted with fish physiology, which is the study of how the component parts of fish function together in the living fish. In practice, fish anatomy and fish physiology complement each other, the former dealing with the structure of a fish, its … See more In many respects, fish anatomy is different from mammalian anatomy. However, it still shares the same basic body plan from which all vertebrates have evolved: a notochord, rudimentary vertebrae, and a well-defined head … See more Fish are vertebrates. All vertebrates are built along the basic chordate body plan: a stiff rod running through the length of the animal (vertebral column or notochord), with a hollow tube of nervous tissue (the spinal cord) above it and the gastrointestinal tract below. … See more Intestines As with other vertebrates, the intestines of fish consist of two segments, the small intestine and the large intestine. In most higher vertebrates, … See more There are two different skeletal types: the exoskeleton, which is the stable outer shell of an organism, and the endoskeleton, which forms the support structure inside the body. The skeleton of the fish is made of either cartilage (cartilaginous fishes) or bone (bony fishes). … See more The head or skull includes the skull roof (a set of bones covering the brain, eyes and nostrils), the snout (from the eye to the forward-most point … See more Jaw The vertebrate jaw probably originally evolved in the Silurian period and appeared in the Placoderm fish which further diversified in the Devonian. Jaws are thought to derive from the pharyngeal arches that … See more Fish reproductive organs include testes and ovaries. In most species, gonads are paired organs of similar size, which can be partially or totally … See more WebDec 22, 2024 · An anal fissure is an anal tear or crack, in the lining of the anal canal, a cut or tear in the anus that extends into the anal canal. It can cause pain during and …

Anal oxygen administration may save lives The Economist

http://www.casereports.in/articles/3/1/fish-bone-in-rectum.html WebMay 14, 2024 · A long time ago, ancient fish swam in a harsh aquatic environment, ... When the research team injected either gaseous or liquid oxygen into the rectums of both rodents and pigs, a procedure known ... d20 firearm attachments

Some mammals can breathe through their butt, scientists …

WebDec 22, 2024 · An anal fissure is an anal tear or crack, in the lining of the anal canal, a cut or tear in the anus that extends into the anal canal. It can cause pain during and after a bowel movement and there ... WebSep 30, 2024 · An anal fissure may cause one or more of the following symptoms: a visible tear in the skin around your anus. a skin tag, or small lump of skin, next to the tear. sharp … WebJul 20, 2011 · Jan 21, 2009. #2. The strings coming out between the belly and tail was probably poo. Sometimes it can be dark coloured and sometimes light coloured. If it is white and hangs around for a bit the fish … d20 greater two weapon fighting