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