B2.2.2 - Circulatory System Flashcards
What is your circulatory system made up of?
Your heart and blood vessels
What is it known as if blood remains with the heart and blood vessels?
The closed system
What is blood good for?
Transporting substances around your body that need them
Carrying away waste products
Give an example of a good substance blood carries around
Oxygen
Glucose
Give an example of a waste product blood gets rid of.
Carbon dioxide
How many times does blood flow through your heart during each circuit of the body?
2
Why is it called the double circulatory system?
The blood flows twice through your heart during each circuit of the body
There are two systems of flow in the circulatory system
What colour is oxygenated blood when represented?
Red
What colour is deoxygenated blood when represented?
Blue
Explain the process of the circulatory system
Your heart pumps look out to your organs and tissues. The oxygen and glucose in the blood diffuses into them, as the carbon dioxide diffuses out. The blood travels back to the heart, which pumps it to the lungs. In the lungs the carbon dioxide diffuse out of the body while new oxygen diffuses in. Cycle repeat.
What are the three main types of blood vessels?
Arteries, veins and capillaries
What do blood vessels do?
They are tubelike structures through which blood flows through
What specific job does arteries do?
Carry blood away from the heart under high pressure
What specific jobs do veins have?
Return blood to the heart, and stop blood from flowing the wrong way
What feature do veins have that prevents blood from flowing the wrong way?
Valves
