Human Circulatory System Quiz

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5 Questions

What is the term used for the system of organs that includes the heart, blood vessels, and blood circulated throughout the body?

Cardiovascular system

In vertebrates, the circulatory system is described as closed, meaning:

The blood never leaves the network of blood vessels

What components are found in blood?

Plasma, red blood cells, white blood cells, and platelets

Which organisms lack a circulatory system?

Diploblasts such as sponges and comb jellies

What is the function of the cardiovascular system?

Circulating nutrients, oxygen, and collecting waste materials

Study Notes

Circulatory System

  • The system of organs that includes the heart, blood vessels, and blood circulated throughout the body is referred to as the circulatory system.

Characteristics of Circulatory System in Vertebrates

  • In vertebrates, the circulatory system is described as closed, meaning that the blood is confined within blood vessels and is not mixed with other fluids.

Components of Blood

  • Blood consists of red blood cells, white blood cells, and platelets suspended in plasma.

Organisms Without a Circulatory System

  • Some invertebrates, such as flatworms, lack a circulatory system and instead rely on diffusion to transport nutrients and oxygen to their cells.

Function of the Cardiovascular System

  • The function of the cardiovascular system is to transport oxygen and nutrients to cells and remove waste products, thereby maintaining homeostasis and supporting the overall health of the organism.

Test your knowledge of the human circulatory system with this quiz. Explore the components and functions of the cardiovascular system, including the heart, blood vessels, and blood circulation. Learn about the two divisions of the circulatory system and enhance your understanding of this vital bodily system.

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