B4 heart organisation

Question 1

circulatory system components

Answer 1

blood-carries oxygen and nutrients
blood vessels- holds the blood
heart-pumps blood through vessels

Question 2

double circulatory system parts

Answer 2

one carries deoxygenated blood from heart to lungs
- gains o2 from lungs, back to heart
other carries oxygenated blood to body
-gives up o2 to tissues
-becomes doxgtd and flows back to heart
repeat

Question 3

pathway of blood

Answer 3

-into vena cava/ pulmonary vein
- into left/right atrium
- atria contract going into ventricles
- ventricles contract go back up
- out of pulmonary artery ( to lungs)
or out of aorta ( to body)