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