Circulatory System

All Cnidarians have nematocysts as a specialized organelle. Cnidarians use their nematocysts to capture prey and as a defense mechanism against predators.

All vertebrate animals (animals with spines) and a few invertebrates

("echinoderms" - starfish, sand dollars, sea urchins, and sea

cucumbers) have closed circulatory systems.

Humans give birth to live young, but fish are oviparous (egg-laying).

The circulatory system of mammals helps in the transfer of nutrients, oxygen, and other materials to the cells and removes the metabolic wastes. The circulatory system consist of three parts namely the blood, blood vessels, and the heart which is the pumping organ.

Fish have closed-loop circulatory systems.

Well.... The frog needs nutrients in order to survive. When the frog would eat its food, the food would go down through the digestive system, where obviously the food would break down. Then the circulatory system would take the broken down food and spread the nutrients that were taken from the food, all across the frogs body.

So the main answer is that a frogs digestive and circulatory system are important for its survival because the frog needs nutrient given to its body. The two systems work together to break down the food and spread the nutrients across the frogs body.

- This was the way I answered a question on my lab.

frog does not have ribs. It does not have rib cage also, so frogs cannot breathe by expanding the rib cage

An earthworm has a circulatory system consisting of four or more ventral blood vessels and one dorsal blood vessel that is also its heart. Most of the pumping of blood is performed by general muscular movements.

One difference is that sharks have a much shorter intestine because their food goes through a spiral valve that rotates it multiple times until it's fully digested.

Sea otters have a closed circulatory system.

In double circulation there is complete segregation of oxygenated and deoxygenated blood. Because of this the blood passes twice through the heart in one cycle of circulation hence the name double circulation. This is necessary for optimum oxygen utilization as humans are warm blooded animals and need extra energy to maintain their body temperature

Yes, all mammals (including squirrels) have digestive systems.

Well to start, the goldfish has two eyes, two nostrils, two gill covers, and a mouth. Then comes the two major parts- the head and abdomen. And lastly their are the fins: the pectorals, the pelvic fins, the caudle fin(s), the anal fins, and the dorsal fin.

Sushi restaurants sell raw fish as one of their main types of dishes so some people worry about food poisoning. This is unlikely though because the restaurant will maintain high standards of hygiene.

they are different because jellyfish are usually pink and us humans are either white black chocolate or pink haha, they are also different because they have the stingers, the only thing that stings from our body is when we have to take a crapuley and it doesnt want to come out (also known as being consitipation haha) they also have like 5 arms and we only have 2 except for the male the 3rd arm is just hidden in his pants :) those are all the differences between jellyfish and humans.. also we get more pleasure when we do it with our boyfriend or girlfriend and all the jellyfish feels is our feeling of constipation <- when they lay eggs, well if they lay eggs i don't know for sure !

Depends how big you want it. It might be worth getting hold of a red plastic inflatable ball, let some air out and push the edges in, then seal it up again. It might be too floppy though - just an idea...

A system that allows energy to move in and out but not mass.

Almost none. It does control its own flow, and it will speed the heart in anticipation of need, but that does not effect the actual flow of blood.

well, the answer is so simple, a frog's heart needs oxygen which is required from the lungs therefore the circulatory system (blood/heart) needs oxygen from the respiratory system (lungs). since they are so close together, both system have easy access to one another.

The circulatory system carries the oxygen full/lacking blood to and from the lungs. The muscular system makes the lungs expand and contract so the air can flow in and out of the lungs and out the capillaries.

Your body is making up for an oxygen deprivation. Walking should not be enough exersion to make you breath hard. It has to do with the efficiency (in shape or out of shape) of your heart and lungs. Depending upon your age, this could indicate a health problem that you would need to have checked by a doctor.

closed circulatory system (double circulatory system)

Tigers breathe through their nasel section and mouth to deliver air to their lungs. The heart pumps oxygenated blood which provides support so the tigers can breathe. As they inhale oxygen they exhale out Carbon Dioxide. Answered By John Thomas.

The lungs are part of the respiratory system! they help the circulatory by giving oxygen, but they are just respiratory.