Question

Closed type of circulatory system can be seen in
A. Earthworm
B. Squids
C. Humans
D. All of the above

Answer 1

Hint: The blood remains inside the vessel walls in a closed systemic circulation. Throughout this way, blood is completely separate from body tissue. This mechanism does have a heart which pushes blood in a pattern of continuous circulation.

Complete answer:
Earthworms have such a simple closed circulatory system extending all along with the size of their body. Earthworm’s blood vessels flow via their segments, transporting essential oxygen and other nutrients to all their organs. Aortic arches, dorsal capillaries, and ventral blood vessels are indeed the three major types of vessels identified in the closed circulatory system of the earthworm. The heart is also at the core of the mammalian closed circulatory system.

The size of the clenched fist, the human heart is shielded by a rib cage. Made of a sophisticated and specific heart muscle, it pumps the blood all across the body and then into the heart itself. In mammals, the heart consists of four chambers: two atria and two ventricles. Oxygen-rich blood is divided from deoxygenated blood that enhances the capacity of double circulation and is presumably essential for the warm-blooded existence of mammals.

Cephalopods (squids) are exceptionally bright invertebrates. Cephalopods also have a closed circulatory system. This indicates that blood is flowing back to the heart via a series of vessels. The center of the circulatory cephalopod system is a sequence of three beating hearts. This trilogy of hearts is associated with a high network of veins, arteries, and capillaries.

So, the correct answer is option (D).

Additional information:
Animals with a closed circulatory system tend to be greater than those who have an open circulatory system—consider human versus grasshopper, for comparison. This form of a system can carry blood to the extremities thus ensuring a higher blood pressure than that of an open circulatory system. There are many distinct cardiac structures for an animal with a closed systemic circulation. Blood volume could be balanced by contraction and relaxation of blood vessels. In contrast to the open circulatory system, the closed circulatory system is much more structured and governed.

Note: The blood will not occupy the body's cavities in organisms with a closed circulatory system. Most vertebrates, such as humans, have quite a circulatory program called the cardiovascular system and a supplementary system known as that of the lymph system.