lacked paired fish
If there is a good blood supply to the gills of a fish it will be breathing and acting normally. As all fish are quite different this will have to be compared to an average happily living fish of the same br The red color of gills is from hemoglobin. Also, think about the size of the gills relative to the overall size that different fish can achieve it also stands to reason that sufficient oxygen must be transported to all the tissues via blood...as well as any expiration gases hence the gills have massive amounts of blood.
An octopus has three hearts. Two pump blood through each of the two gills, while the third pumps blood through the body.
they are attached to the walking legs. this serves as an advantage because when the legs move so do the gills, allowing water to circulate and a greater amount of o2 and co2 to be exchanged.
To oxygenate the blood
One difference is that humans have lungs so that is used to oxygenate the blood while shark has gills. Another difference is that Sharks use the heat from their muscles, so rather then expelling it into the outside environment that actually use that to heat their blood and transfer the heat from warmer blood to passing colder blood.
Its a simple closed circuit system. The blood flows through the fish body passing through the gills where the gills siphon out dissolved oxygen from the water. The oxygenated blood then flows through the fish expending the oxygen and picking up carbon dioxide and expelling it from the gills and picks up more oxygen.
It pumps newly oxygenated blood that's come from the gills into the heart, to circulate again.
The heart of the crayfish pumps to circulate the blood. The blood flows through the open cavities as there is a minimum of tubing in the crayfish. The circulation of the blood aerates and purifies it.
No, They receive oxygenated blood through the umbiliacl cord, humans do not have gills.
It circulates the body distributing the oxygen picked up in the gills and collecting carbon di-oxide to exchange in the gills for more oxygen.
because unlike mammals, sharks do not have lungs (like other fish) and the gills act as filters. They process oxygen through the water so they can breath thus the shark always has to keep moving (depending on the species of course)
Fish process the oxygen in the water through their gills. They suck in water and as they push the water out of their gills, the gills retain the air. This is why fish tank require pumps; to circulate the water and create oxygen.
The gills of a healthy fish are bright red; this is because blood is flowing through them.
They are red because you can see the colour of the red blood through the thin walls of the gills. The gills carry the oxygenated blood into and around the fish just as your lungs do for you.
the gills
Fish use gills to extract oxygen from the water passing over the gills.
Through the gills.