This is the system that reaches every part of our body and is formed by the blood, blood vessels and the heart.
Circulatory System
_____________ is a red liquid that fills the circulatory system.
Blood
________________ are the tubes that circulate the blood. These tubes gradually reduce in size to reach all parts of our body.
Blood vessels
The ___________ carry blood from the heart to the organs, transporting nutrients and oxygen.
arteries
The _________ carry blood back from the organs to the heart, transporting waste and carbon dioxide.
veins
The ____________ connect the arteries and veins to exchange substances.
capillaries
The heart is a hollow organ with ________ cavities surrounded by muscular walls
four
The heart ____________ and allows blood to enter and it contracts and allows blood to flow out into the vessels.
expands
TRUE or FALSE: In the circulatory system, the blood leaves the heart through the blood vessels which distribute the blood around the body.
True
TRUE or FALSE: The blood carries substances, nutrients and oxygen, to where they are needed, and it collects the waste and carbon dioxide which are released.
True
TRUE or FALSE: The CAPILLARIES carry the blood to the organs.
False (arteries)
TRUE or FALSE: The blood flows through the capillaries to the organs.
True
In the _________, blood collects nutrients from the digestion of food in the digestive system.
intestine
TRUE or FALSE The blood returns to the heart via the ARTERIES and ALVEOLI.
False (Capillaries and Veins)
