What I Have Learned
1. Directons: Choose the correct answer by writing the letter on your activity notebook,
1. What is known as the river of life?
A blood vessels B heart
C. capillaries
D blood
2. Which of the following is considered as the main organ of the circulatory system?
A heart
B. vein
C. brain
D. artery
3. Without this the body will get easily infectious.
A plasma
B. white blood cells C. red blood cells
D. blood vessel
4. The movement of the blood as it carries food and oxygen to the cells of the body is
called
A respiration
B. excretion
C. digestion
D. Circulation
5. Which of the following is not a main part of the circulatory system?
A blood B. blood vessels C. lungs D. heart​