Q: Which system in the human body consists of the heart, a network of blood vessels, and blood?


Read this paragraph and choose the correct option from the provided answers:

The cardiovascular system consists of the heart, a network of blood vessels, and blood. Blood is a liquid tissue. The heart is a pump that keeps blood flowing through the vessels of the system.

 Choices:

- cardiac system

- nervous system

- circulatory system

- cardiovascular system


A:
cardiovascular system