The Circulatory System
Exercises
Section I
A. Choose the correct option.
1. The group of organs working together to perform a particular function is called
a. a cell system. [ ]
b. a tissue system. [ ]
c. an organ system. [✓]
d. None of these. [ ]
2. The circulatory system helps in transportation of
a. oxygen. [ ]
b. nutrients. [ ]
c. water . [ ]
d. All of these. [✓]
3. This is not a blood vessel.
a. Atria. [✓]
b. Capillaries. [ ]
c. Arteries. [ ]
d. Veins. [ ]
4. To keep the heart healthy and strong, we should
a. eat a balanced diet. [ ]
b. exercise. [ ]
c. practice yoga. [ ]
d. d. All of these. [✓]
5. The largest artery is
a. superior vena cova. [ ]
b. aorta. [✓]
c. arterioles. [ ]
d. None of these. [ ]
B. Choose the correct option to fill in the blank.
1. The heart is a (muscular/non-muscular) organ that pumps blood to all parts of the body.
2. The lower chambers of the heart are called (ventricles/auricles).
3. We should walk for at least half (a minute/an hour) to keep our heart healthy.
4. The (RBCs/WBCs) protect the body from the infectious diseases.
5. The (veins/capillaries) are the thinnest blood vessels.
C. Name the following.
1. The pumping organ that pumps blood to all parts of the body.
=Heart.
2. The rhythmic movement that the heart makes while pumping the blood.
= Heartbeat.
3. The upper chambers of the heart.
= Auricles.
4. The names of two yoga exercises.
= Tadasana and Trikonasana;
Section 2
D. Short answer questions:
1. What is an organ system? Give an example.
= A group of organs working together to perform a particular function is called an organ system. Example - digestive system.
2. Define heart. Also give its location in the body.
= The heart is a muscular organ that pumps blood to all parts of our body.
It is located between the lungs slightly to the left of the middle of the chest.
3. Where can we feel the movement of our heart beat in the body?
= We can feel the rhythmic movement of our heart beat at different places on our body such as the wrist or the neck.
4. Why should we eat less of junk food?
= We should try to eat less of junk food or fried food as those food are bad for the heart.
E. Long answer questions:
1. Describe the structure and function of the heart.
= Human heart has two upper chambers and two lower chambers. The upper chambers are called atria or auricles. They get blood coming from the rest of the body. The lower chambers are called ventricles. They pump blood out of the heart.
2. List any five ways to keep our heart healthy.
= Five ways to keep our heart healthy are -
i) Walk daily for at least three to four kilometres in the morning.
ii) Exercise for at least 30 minutes everyday.
iii) Avoid sitting for too long.
iv) Always eat a balanced diet.
v) Stay happy and avoid stress.
3. What are the benefits of practicing yoga?
= The benefits of practicing yoga are -
i) It increases muscle strength and provides the function of lungs.
ii) It helps in decreasing stress and anxiety.
iii) It boosts energy, improves memory and increase concentration.
iv) It helps in reducing weight.
v) It relieves joint pain in elderly persons.
4. Write any three functions of blood.
= Three functions of blood are -
i) Blood helps in transporting Oxygen and Carbon dioxide throughout the body.
ii) Blood carries the nutrients generated during digestion to all cells of the body.
iii) Blood helps in maintaining the temperature of the body.