NAME :____________________________________ SCORE : ____________
1. Which are the organs of the respiratory system?
A. Lungs, heart, and blood.
B. Rib cage, diaphragm, and lungs.
C. Nose, lungs, heart, and diaphragm
D. Lungs, throat, and passageways that lead to the lungs
2. What happens in the diaphragm when we exhale (breathe out)?
A. The diaphragm relaxes and moves upwards.
B. The diaphragm contracts and moves upwards.
C. The diaphragm relaxes and moves downwards.
D. The diaphragm contracts and moves downwards.
3. What will happen if the epiglottis does not close the entrance of airways?
A. The larynx will be blocked with food particles.
B. The pharynx will have difficulty in swallowing.
C. The food particles will block the opening of the trachea and a person will have
difficulty in breathing.
D. The food particles will block the bronchioles thus making it difficult to breathe in
and breathe out.
4. What important activity takes place in the lungs?
A. Food is digested.
B. Liquid waste is filtered from the blood.
C. The trachea is exchanged for the larynx.
D. Oxygen is exchanged for carbon dioxide.
5. Which is taking place in this figure?
A. Exhalation; the rib cage is expanding. B. Exhalation; the diaphragm is relaxing.
C. Inhalation; the chest cavity is reduced. D. Inhalation; the diaphragm is
contracting.
6. Which statement is true about the human circulatory system?
A. It makes blood cells. B. It transports oxygen and nutrients.
C. It breaks down food and releases nutrients. D. It is the first line of defense
against bacteria.
7. Which blood vessel carries blood back to the heart?
A. Artery B. Blood vessel C. Capillary D. Vein
8. Which is NOT a function of the circulatory system?
A. Deliver oxygen and nutrients to cells. B. Break down carbohydrates into
glucose.
C. Transport other materials through body. D. Remove carbon dioxide and
wastes from cells.
9. If a rupture occurs in the pulmonary artery, which passageway is affected?
A. The passageway of blood going to aorta B. The passageway of blood going to
lungs.
C. The passageway of blood going to vena cava. D. The passageway of
blood going to right atrium.
Use the figure to answer questions 10 and 11.
10.Which path in the figure does the blood follow through
the heart as it returns from the head and body?
A. 1→2 B. 2→1 C. 3→4 D. 4→3
11.In which chamber does the blood flow while transporting fresh oxygen?
A. 1 B. 2 C. 3 D. 4
12.What type of circulation carries oxygenated blood to the body?
A. Bodily Circulation C. Pulmonary Circulation
B. Coronary Circulation D. Systemic Circulation
13.In order for the body to maintain homeostasis, the intake of oxygen into the
lungs must be followed by which process?
A. A decrease in blood flow. C. An increase in blood pressure.
B. A decrease in gas exchange. D. The exhalation of carbon dioxide.
14.How do the respiratory and circulatory systems work together?
A. They supply the body's cells with oxygen.
B. They are responsible for the movement of the body.
C. They break down food into energy and eliminate waste.
D. They send chemical signals throughout the body via hormones.
15.The circulatory and respiratory systems work together to provide cells with
oxygen and nutrients and remove wastes such as carbon dioxide. When the body
needs more oxygen, how does the circulatory system respond?
A. The heart beats faster to match the increase in breathing rate.
B. More blood is sent to the lungs and less to the rest of the body.
C. The blood vessels in the arms and legs constrict to conserve oxygen.
D. Blood moves more slowly through the organs to carry away more wastes.
II. To sum up what you have learned from this module, fill in the blanks
using the words inside the box. Write your answer on a separate sheet of
paper.
16. The _______________ is composed of the nasal cavity, pharynx, larynx, trachea,
bronchi, and lungs.
17. The primary function of the respiratory system is to supply the blood with
_______________ to all parts of the body.
18. The respiratory system is made of body parts that are in charge of your
_______________. It includes:
19. The _______________ which is responsible for conditioning the air that is received
by the nose.
20. The _______________ which is the opening just behind the nose and mouth and is
part of both the respiratory and digestive systems.
21. The _______________ which is commonly called the voice box, an organ on top of
the neck involved in breathing, producing sound and protecting the trachea against
food aspiration
22. The _______________, also referred to as the windpipe, is a tube through which
respiratory gas transport takes place.
23. The _______________ which carries air that is breathed in through to the functional
tissues of the lungs, called alveoli.
24. The _______________ which carry out the process of gas exchange.
25. The _______________ that give our lungs huge surface area for absorbing oxygen
from the air.
26. The (a) _______________ is the body system that transports blood and other
materials. It brings vital supplies to the cells and carries away their
27. _______________.
28. _______________ is the red liquid that circulates in the arteries and veins of
humans and other vertebrate animals, carrying oxygen to and carbon dioxide from
the tissues of the body.
29. The _______________ are part of the circulatory system that transports blood
throughout the body.
30. There are three major types of blood vessels: the
31 _______________, which carry the blood away from the heart; the
32 _______________, which enable the actual exchange of water and chemicals
between the blood and the tissues; and the
33 _______________, which carry blood from the capillaries back toward the heart.
34. The _______________ is a muscular pump that generates the blood pressure
needed to keep the blood flowing. It is divided into four chambers;
35. _______________, (b) right ventricle, 36 _______________, and (d) left ventricle.
37. _______ is the main artery from the heart. It carries
38. _______________ blood to the body and head.
40. The _______________ are underneath the atria and are the chambers that pump
blood out of the heart.
41.The _______________ has a thin wall because it only needs to pump the blood
around the lungs at low pressure.
42.The _______________ has a much thicker wall because it generates the high
pressure needed to push blood to the head and body.
III. BLOOD FLOW SEQUENCE
Arrange the steps in the heart’s action as it pumps blood by writing 1 (being the
first) – 8 (being the last)
43. ______ Oxygen-rich blood enters the left atrium from the lungs.
44. ______ Blood from the right ventricle goes to the lungs to pick up oxygen.
45. ______ At the same time, oxygen-poor blood enters the right atrium.
46. ______ Blood is squeezed into the ventricles.
47. ______ The ventricles contract.
48. ______ The heart muscle relaxes.
49. ______ At the same time, blood from the left ventricle goes to the body to supply
it with oxygen.
50. ______ The heart muscle contracts.
