Blood Circulatory Systems Flashcards
What do animals need to survive?
Oxygen
Nutrients
What must happen to prevent poisoning of body cells?
Waste products and carbon dioxide must be removed
What kind of animals have a blood circulatory system?
More complex animals
Why do animals have blood circulatory systems?
To transport oxygen and nutrients
To remove waste and carbon dioxide
How many main components does the human blood circulatory system have?
Three
What are the three main components of the blood circulatory system in humans?
Heart
Blood vessels
Blood
What role does the heart play in the blood circulatory system?
The pumping organ
What role do the blood vessels play in the blood circulatory system?
They are the tubes through which blood flows
What role does the blood play in the blood circulatory system?
The transport medium in the blood vessels
What kind of blood circulatory system do humans have?
Closed
What is a closed blood circulatory system?
One in which the blood is limited to the blood is limited to the blood vessels
What makes it possible to maintain a high level of activity in the body?
The high rate of oxygen-rich blood flowing through it
