The tubes that carry blood throughout every part of the body are called _____.
blood vessels
organs
tendons
cells
_____ is how many times a minute your heart beats.
heart dance
heart beat
pulse
heart pump
What body system is the heart a part of?
respiratory system
circulatory system
skeletal system
skin
When the chambers of the heart _____ the flood is forced out.
relax
squeeze
What type of organ is the heart?
a tendon
a ligament
a joint
a muscle
Which blood vessels carry blood AWAY from the heart?
veins
arteries
The function of capillaries is to...
carry blood away from the heart
deliver blood to all the body’s cells
carry blood back to the heart
Arteries branch off into tiny blood vessels called _______.
veins
capillaries
caterpillars
The heart is part of the _______ system, a network made up of the heart, blood, and blood vessels.
circulatory
muscular
skin
respiratory
When the chambers of the heart ____, they fill up with blood.
squeeze
relax
Which blood vessels carry blood BACK to the heart?
arteries
veins