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