16. The
1. It is a hollow muscle that has four
chambers.
Atrium
(Atrio)
Atrium
(Atrio)
Ventricle
(Ventrículo)
Ventricle
(Ventrículo)
1 atrium two atria (word with latin origins)
17. 2. It is like the engine of the circulatory
system because it pumps blood to the
rest of the body.
18. 3. It usually beats between 60 and 100 times
per minute but when we do exercise, it goes
faster.
19. … because our body needs to consume
more oxygen and energy, so the
circulatory system has to carry more
blood.
Click here