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