The document is a worksheet focused on the circulatory system, containing true/false questions about heart functions and blood circulation. It includes an exercise to identify parts of the heart involved in circulating oxygenated blood. The worksheet provides sources for educational images related to the human heart.

1. WORKSHEET “THE CIRCULATORY SYSTEM”
Date:
Name:
1. True or false?
a) The heart valves allow blood to move in both directions
b) The circulatory system is responsible for transporting blood, oxygen and
nutrients throughout the body
c) The circulatory system of human includes the heart, kidneys and vessels
d) The circulatory system contributes to blood clotting through platelets
e) The human heart is fourfold
f) The ventricles are located in the upper part of the heart while the atrium
in the lower part
g) Non-oxygenated blood through the superior and inferior vena cava
enters the left atrium
h) The blood when it leaves the lungs is rich in carbon dioxide (non-
oxygenated)
2.
In which of the marked parts of the heart circulates oxygenated blood?
Circle the correct answer.

2. (a) A and D
(b) A and E
(c) C and D
(d) only in F
(e) only in E
3. Name in the photo below the parts of the heart

3. ANSWERS
1. α F
b) T
c) F
d) T
e) T
f) F
g) F
h) F
In which of the marked parts of the heart circulates oxygenated blood?
Circle the correct answer.
(a) A and D
(b) A and E
(c) C and D
(d) only in F
(e) only in E
3.
right
atrium
right
ventricle
left
atrium
left
ventricle

4. PHOTO SOURCES
 512px-Diagram_of_the_human_heart_(clean).svg
Wnauta, CC BY-SA 3.0 http://creativecommons.org/licenses/by-sa/3.0/ , via
Wikimedia Commons
 https://pixabay.com