6TH GRADE UNIT 2-C.B 30-31
-Blood flows around the body in two connected circuits.
-These circuits form the two types of circulation:
PULMONARY SYSTEMIC
PULMONARY CIRCULATION
-The blood travels from the heart to the lungs and back again.
-In the lungs, the blood releases carbon dioxide and takes in oxygen.
1-Blood from the body,
carrying carbon dioxide,
enters the heart, to the
right atrium, through the
superior and inferior vena
cava and goes down to the
right ventricle
2-Blood leaves the heart
through the pulmonary artery.
3-Blood flows through the
pulmonary arteries and
reaches the lungs.
4-Gas exchange occurs
in the lungs.
Carbon dioxide is removed
from the blood and oxygen
enters the blood.
5-The blood, carrying oxygen,
enters the heart from the
pulmonary veins.
SYSTEMIC CIRCULATION
-The blood travels from the
heart to the body, except
the lungs,and back again.
-The blood carries oxygen
to all the cells and collects
carbon dioxide and other
waste substances.
1-Blood from the heart,
carrying oxygen, leaves it
through the AORTA.
2-The aorta branches into
thinner arteries until
it reaches the capillaries
throughout the body.
3-Oxygen and nutrients pass
from the blood into the cells
through the capillaries.
The blood also collects carbon
dioxide and other waste substances.
4-The blood from the capillaries
contains carbon dioxide.
It moves along the venae cavae.
These veins enter the heart.
HOW YOUR HEART WORKS? The Dr. Binocs Show
https://www.youtube.com/watch?v=tg_ObDJEaGo
HOW YOUR HEART WORKS (KidsHealth)
https://www.youtube.com/watch?v=_eVG45_iF9U
EL FUNCIONAMIENTO DEL SISTEMA CIRCULATORIO (Mejor con Salud)