Any animal can have a heart attack, though most are not prone to because they do not suffer from high cholesterol/triglyceride levels, and therefore don't have the same degree of problem with coronary artery occlusion as we do.
arteries, capillaries and veins
Fish contains Omega 3 fatty acids that increase the health of your heart and arteries.
Blood first leaves the heart of a fish and enters the gills for oxygenation. From the gills, oxygenated blood is transported to the rest of the fish's body through arteries.
muscular arteries
Arteries do neither
The arteries
retinal arteries, arteries in the legs.
I have two questions that are almost the same and i dont know with one to answer with arteries. the arteries the arteries the arteries
Arteries.
The arteries carry oxygenated blood from the heart to the body. The walls of arteries are muscular allowing the arteries to constrict or dilate. The more constricted the arteries are, the higher the blood pressure.
They use their gills just like all other fish. They are a typical laterally compressed (compressiform) reef fish which obtain oxygen by simple diffusion as O2 rich water flows across their gills which are served by two arteries, the efferent and afferent arteries. Fish use a system called counter current exchange of water and blood between these two arteries across the gill lamilae (gill sheets), meaning that the blood and water flow in opposite directions across the gill sheet. This maintains the concentration gradient of O2 between blood and water so that more highly oxygenated water is meeting blood with lower oxygen levels. Its quite efficient as well (~90%), which is important since fish live an extremely low O2 environment >2% DO.
The arteries that actually serve the heart itelf are known as coronary arteries.