Respuesta :
The circulatory system, composed of the heart, veins, arteries, capillaries, and blood, is a feature common in most vertebrates (animals with a distinct spine). In these animals, blood never leaves the confines of the heart and blood vessels, making theirs a closed circulatory system. In regard to your question, the best answer is B. Some animals have hearts that don’t have atria, while others don’t even have a distinct heart at all.
The group of components that can be associated with circulatory systems of most living animals are: B. vessels, heart, circulating fluid
- The circulatory system can be regarded as system in the body that is been made of blood vessels which helps in carrying away of blood from and towards the heart.
- It contains the Arteries as well as the vein, the Arteries helps in carrying of blood away from the heart while the carrying back of blood to the heart is done by the vein.
- The circulatory system transport circulating fluids such as oxygen, nutrients, as well as hormones to cells, it also act in the removal of waste products such as CO2.
Therefore, option B is correct.
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