Respiratory System

Lungs

Epiglottis

diaphragm

a

c

b

lung

trachea

alvioli

diaphragm

muscular sheet that pulls air ​ (a)   and pushes air ​ (b)   of the​ (c)   ; it is shaped like a dome​ (d)  

• diaphragm
• in
• out
• lungs
• stomach
• heart
• brain
• liver
• intestines

windpipe. Divides into two branches inside each lung​ (a)   ​

• trachea
• esophagus
• bronchus

​ (a)   is the area beyond the mouth including the ​ (b)   and ​ (c)  

• pharynx
• larynx
• esophagus
• trachea
• stomach
• intestines
• throat

air inhaled through this area is warmed and moistened​ (a)  

• nose
• mouth
• ears

Label the respiratory system.

e

d

c

b

a

Trachea

Bronchiole

Diaphragm

Alveoli

Lung

Given the following structures:
1. larynx
2. nasal cavity
3. pharynx
4. trachea
Which of the following is the correct order that air would flow during inhalation. 

• 1,2,3,4
• 2,3,1,4
• 2,1,3,4
• 4,2,3,1 

Which 2 substances are exchanged in the Respiratory System?

• oxygen and nitrogen
• carbon dioxide and oxygen
• oxygen and glucose
• glucose and carbon dioxide