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1. The____ is composed of the nasal cavity, pharynx, larynx, trachea, bronchi, and lungs.

2. The primary function of the respiratory system is to supply the blood with____ to all parts of the body.

3. The respiratory system is made of body parts that are in charge of your____. It includes:

a. The____ which is responsible for conditioning the air that is received by the nose.

b. The_____ which is the opening just behind the nose and mouth and is part of both the respiratory and digestive systems.

c. 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

d. The__also referred to as the windpipe, is a tube through which respiratory gas transport takes place.

e. The ___which carries air that is breathed in through to the functional tissues of the lungs, called alveoli.

f. The____which carry out the process of gas exchange.

g. The____that give our lungs huge surface area for absorbing oxygen from the air.

4. The (a)______ is the body system that transports blood and other materials. It brings vital supplies to the cells and carries away their (b)_____

5. __________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.

6. The _________ are part of the circulatory system that transport blood throughout the body.

7. There are three major types of blood vessels: the (a) ________________, carry the blood away from the heart; the (b) ______________, actual exchange of water and chemicals between the blood and the tissues; (c) ____________,which carry blood from the capillaries back toward and the the heart.

8. The ___________ is a muscular pump that generates the blood pressure needed to keep the blood flowing. It is divided into four chambers; (a)__________, (b) right ventricle, (c)__________, and (d) left ventricle.

9. The (a)_______ is the main artery from the heart. It carries (b) _______blood to the body and head.

10. The________ are underneath the atria and are the chambers that pump blood out of the heart.

11. The__________ has a thin wall because it only needs to pump the blood around the lungs at low pressure. has a much thicker wall because it generates the high

12. The__________ has a much thicker wall beacause it generates the high pressure needed to push blood to the head and body.​
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